HTML Standard

List of elements
Element	Description	Categories	Parents†	Children	Attributes	Interface
`a`	Hyperlink	flow; phrasing*; interactive; palpable	phrasing	transparent*	globals; `href`; `target`; `download`; `ping`; `rel`; `hreflang`; `type`; `referrerpolicy`	`HTMLAnchorElement`
`abbr`	Abbreviation	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`address`	Contact information for a page or `article` element	flow; palpable	flow	flow*	globals	`HTMLElement`
`area`	Hyperlink or dead area on an image map	flow; phrasing	phrasing*	empty	globals; `alt`; `coords`; `shape`; `href`; `target`; `download`; `ping`; `rel`; `referrerpolicy`	`HTMLAreaElement`
`article`	Self-contained syndicatable or reusable composition	flow; sectioning; palpable	flow	flow	globals	`HTMLElement`
`aside`	Sidebar for tangentially related content	flow; sectioning; palpable	flow	flow	globals	`HTMLElement`
`audio`	Audio player	flow; phrasing; embedded; interactive; palpable*	phrasing	`source`; `track`; transparent*	globals; `src`; `crossorigin`; `preload`; `autoplay`; `loop`; `muted`; `controls`	`HTMLAudioElement`
`b`	Keywords	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`base`	Base URL and default target navigable for hyperlinks and forms	metadata	`head`	empty	globals; `href`; `target`	`HTMLBaseElement`
`bdi`	Text directionality isolation	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`bdo`	Text directionality formatting	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`blockquote`	A section quoted from another source	flow; palpable	flow	flow	globals; `cite`	`HTMLQuoteElement`
`body`	Document body	none	`html`	flow	globals; `onafterprint`; `onbeforeprint`; `onbeforeunload`; `onhashchange`; `onlanguagechange`; `onmessage`; `onmessageerror`; `onoffline`; `ononline`; `onpageswap`; `onpagehide`; `onpagereveal`; `onpageshow`; `onpopstate`; `onrejectionhandled`; `onstorage`; `onunhandledrejection`; `onunload`	`HTMLBodyElement`
`br`	Line break, e.g. in poem or postal address	flow; phrasing	phrasing	empty	globals	`HTMLBRElement`
`button`	Button control	flow; phrasing; interactive; listed; labelable; submittable; form-associated; palpable	phrasing	phrasing*	globals; `command`; `commandfor`; `disabled`; `form`; `formaction`; `formenctype`; `formmethod`; `formnovalidate`; `formtarget`; `name`; `popovertarget`; `popovertargetaction`; `type`; `value`	`HTMLButtonElement`
`canvas`	Scriptable bitmap canvas	flow; phrasing; embedded; palpable	phrasing	transparent	globals; `width`; `height`	`HTMLCanvasElement`
`caption`	Table caption	none	`table`	flow*	globals	`HTMLTableCaptionElement`
`cite`	Title of a work	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`code`	Computer code	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`col`	Table column	none	`colgroup`	empty	globals; `span`	`HTMLTableColElement`
`colgroup`	Group of columns in a table	none	`table`	`col`; `template`	globals; `span`	`HTMLTableColElement`
`data`	Machine-readable equivalent	flow; phrasing; palpable	phrasing	phrasing	globals; `value`	`HTMLDataElement`
`datalist`	Container for options for combo box control	flow; phrasing	phrasing	phrasing; `option`; script-supporting elements*	globals	`HTMLDataListElement`
`dd`	Content for corresponding `dt` element(s)	none	`dl`; `div`*	flow	globals	`HTMLElement`
`del`	A removal from the document	flow; phrasing*; palpable	phrasing	transparent	globals; `cite`; `datetime`	`HTMLModElement`
`details`	Disclosure control for hiding details	flow; interactive; palpable	flow	`summary`*; flow	globals; `name`; `open`	`HTMLDetailsElement`
`dfn`	Defining instance	flow; phrasing; palpable	phrasing	phrasing*	globals	`HTMLElement`
`dialog`	Dialog box or window	flow	flow	flow	globals; `open`	`HTMLDialogElement`
`div`	Generic flow container, or container for name-value groups in `dl` elements	flow; palpable	flow; `dl`	flow	globals	`HTMLDivElement`
`dl`	Association list consisting of zero or more name-value groups	flow; palpable	flow	`dt`; `dd`; `div`*; script-supporting elements	globals	`HTMLDListElement`
`dt`	Legend for corresponding `dd` element(s)	none	`dl`; `div`*	flow*	globals	`HTMLElement`
`em`	Stress emphasis	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`embed`	Plugin	flow; phrasing; embedded; interactive; palpable	phrasing	empty	globals; `src`; `type`; `width`; `height`; any*	`HTMLEmbedElement`
`fieldset`	Group of form controls	flow; listed; form-associated; palpable	flow	`legend`*; flow	globals; `disabled`; `form`; `name`	`HTMLFieldSetElement`
`figcaption`	Caption for `figure`	none	`figure`	flow	globals	`HTMLElement`
`figure`	Figure with optional caption	flow; palpable	flow	`figcaption`*; flow	globals	`HTMLElement`
`footer`	Footer for a page or section	flow; palpable	flow	flow*	globals	`HTMLElement`
`form`	User-submittable form	flow; palpable	flow	flow*	globals; `accept-charset`; `action`; `autocomplete`; `enctype`; `method`; `name`; `novalidate`; `rel`; `target`	`HTMLFormElement`
`h1`, `h2`, `h3`, `h4`, `h5`, `h6`	Heading	flow; heading; palpable	`legend`; `summary`; flow	phrasing	globals	`HTMLHeadingElement`
`head`	Container for document metadata	none	`html`	metadata content*	globals	`HTMLHeadElement`
`header`	Introductory or navigational aids for a page or section	flow; palpable	flow	flow*	globals	`HTMLElement`
`hgroup`	Heading container	flow; palpable	`legend`; `summary`; flow	`h1`; `h2`; `h3`; `h4`; `h5`; `h6`; script-supporting elements	globals	`HTMLElement`
`hr`	Thematic break	flow	flow	empty	globals	`HTMLHRElement`
`html`	Root element	none	none*	`head`; `body`	globals	`HTMLHtmlElement`
`i`	Alternate voice	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`iframe`	Child navigable	flow; phrasing; embedded; interactive; palpable	phrasing	empty	globals; `src`; `srcdoc`; `name`; `sandbox`; `allow`; `allowfullscreen`; `width`; `height`; `referrerpolicy`; `loading`	`HTMLIFrameElement`
`img`	Image	flow; phrasing; embedded; interactive*; form-associated; palpable	phrasing; `picture`	empty	globals; `alt`; `src`; `srcset`; `sizes`; `crossorigin`; `usemap`; `ismap`; `width`; `height`; `referrerpolicy`; `decoding`; `loading`; `fetchpriority`	`HTMLImageElement`
`input`	Form control	flow; phrasing; interactive; listed; labelable; submittable; resettable; form-associated; palpable	phrasing	empty	globals; `accept`; `alpha`; `alt`; `autocomplete`; `checked`; `colorspace`; `dirname`; `disabled`; `form`; `formaction`; `formenctype`; `formmethod`; `formnovalidate`; `formtarget`; `height`; `list`; `max`; `maxlength`; `min`; `minlength`; `multiple`; `name`; `pattern`; `placeholder`; `popovertarget`; `popovertargetaction`; `readonly`; `required`; `size`; `src`; `step`; `type`; `value`; `width`	`HTMLInputElement`
`ins`	An addition to the document	flow; phrasing*; palpable	phrasing	transparent	globals; `cite`; `datetime`	`HTMLModElement`
`kbd`	User input	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`label`	Caption for a form control	flow; phrasing; interactive; palpable	phrasing	phrasing*	globals; `for`	`HTMLLabelElement`
`legend`	Caption for `fieldset`	none	`fieldset`	phrasing; heading content	globals	`HTMLLegendElement`
`li`	List item	none	`ol`; `ul`; `menu`*	flow	globals; `value`*	`HTMLLIElement`
`link`	Link metadata	metadata; flow; phrasing	`head`; `noscript`; phrasing	empty	globals; `href`; `crossorigin`; `rel`; `as`; `media`; `hreflang`; `type`; `sizes`; `imagesrcset`; `imagesizes`; `referrerpolicy`; `integrity`; `blocking`; `color`; `disabled`; `fetchpriority`	`HTMLLinkElement`
`main`	Container for the dominant contents of the document	flow; palpable	flow*	flow	globals	`HTMLElement`
`map`	Image map	flow; phrasing*; palpable	phrasing	transparent; `area`*	globals; `name`	`HTMLMapElement`
`mark`	Highlight	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
MathML `math`	MathML root	flow; phrasing; embedded; palpable	phrasing	per [MATHML]	`Element`
`menu`	Menu of commands	flow; palpable*	flow	`li`; script-supporting elements	globals	`HTMLMenuElement`
`meta`	Text metadata	metadata; flow; phrasing	`head`; `noscript`; phrasing	empty	globals; `name`; `http-equiv`; `content`; `charset`; `media`	`HTMLMetaElement`
`meter`	Gauge	flow; phrasing; labelable; palpable	phrasing	phrasing*	globals; `value`; `min`; `max`; `low`; `high`; `optimum`	`HTMLMeterElement`
`nav`	Section with navigational links	flow; sectioning; palpable	flow	flow	globals	`HTMLElement`
`noscript`	Fallback content for script	metadata; flow; phrasing	`head`; phrasing	varies*	globals	`HTMLElement`
`object`	Image, child navigable, or plugin	flow; phrasing; embedded; interactive*; listed; form-associated; palpable	phrasing	transparent	globals; `data`; `type`; `name`; `form`; `width`; `height`	`HTMLObjectElement`
`ol`	Ordered list	flow; palpable*	flow	`li`; script-supporting elements	globals; `reversed`; `start`; `type`	`HTMLOListElement`
`optgroup`	Group of options in a list box	none	`select`	`option`; script-supporting elements	globals; `disabled`; `label`	`HTMLOptGroupElement`
`option`	Option in a list box or combo box control	none	`select`; `datalist`; `optgroup`	text*	globals; `disabled`; `label`; `selected`; `value`	`HTMLOptionElement`
`output`	Calculated output value	flow; phrasing; listed; labelable; resettable; form-associated; palpable	phrasing	phrasing	globals; `for`; `form`; `name`	`HTMLOutputElement`
`p`	Paragraph	flow; palpable	flow	phrasing	globals	`HTMLParagraphElement`
`picture`	Image	flow; phrasing; embedded; palpable	phrasing	`source`*; one `img`; script-supporting elements	globals	`HTMLPictureElement`
`pre`	Block of preformatted text	flow; palpable	flow	phrasing	globals	`HTMLPreElement`
`progress`	Progress bar	flow; phrasing; labelable; palpable	phrasing	phrasing*	globals; `value`; `max`	`HTMLProgressElement`
`q`	Quotation	flow; phrasing; palpable	phrasing	phrasing	globals; `cite`	`HTMLQuoteElement`
`rp`	Parenthesis for ruby annotation text	none	`ruby`	text	globals	`HTMLElement`
`rt`	Ruby annotation text	none	`ruby`	phrasing	globals	`HTMLElement`
`ruby`	Ruby annotation(s)	flow; phrasing; palpable	phrasing	phrasing; `rt`; `rp`*	globals	`HTMLElement`
`s`	Inaccurate text	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`samp`	Computer output	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`script`	Embedded script	metadata; flow; phrasing; script-supporting	`head`; phrasing; script-supporting	script, data, or script documentation*	globals; `src`; `type`; `nomodule`; `async`; `defer`; `crossorigin`; `integrity`; `referrerpolicy`; `blocking`; `fetchpriority`	`HTMLScriptElement`
`search`	Container for search controls	flow; palpable	flow	flow	globals	`HTMLElement`
`section`	Generic document or application section	flow; sectioning; palpable	flow	flow	globals	`HTMLElement`
`select`	List box control	flow; phrasing; interactive; listed; labelable; submittable; resettable; form-associated; palpable	phrasing	`option`; `optgroup`; script-supporting elements	globals; `autocomplete`; `disabled`; `form`; `multiple`; `name`; `required`; `size`	`HTMLSelectElement`
`slot`	Shadow tree slot	flow; phrasing	phrasing	transparent	globals; `name`	`HTMLSlotElement`
`small`	Side comment	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`source`	Image source for `img` or media source for `video` or `audio`	none	`picture`; `video`; `audio`	empty	globals; `type`; `media`; `src`; `srcset`; `sizes`; `width`; `height`	`HTMLSourceElement`
`span`	Generic phrasing container	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLSpanElement`
`strong`	Importance	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`style`	Embedded styling information	metadata	`head`; `noscript`*	text*	globals; `media`; `blocking`	`HTMLStyleElement`
`sub`	Subscript	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`summary`	Caption for `details`	none	`details`	phrasing; heading content	globals	`HTMLElement`
`sup`	Superscript	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
SVG `svg`	SVG root	flow; phrasing; embedded; palpable	phrasing	per [SVG]	`SVGSVGElement`
`table`	Table	flow; palpable	flow	`caption`; `colgroup`; `thead`; `tbody`; `tfoot`; `tr`; script-supporting elements	globals	`HTMLTableElement`
`tbody`	Group of rows in a table	none	`table`	`tr`; script-supporting elements	globals	`HTMLTableSectionElement`
`td`	Table cell	none	`tr`	flow	globals; `colspan`; `rowspan`; `headers`	`HTMLTableCellElement`
`template`	Template	metadata; flow; phrasing; script-supporting	metadata; phrasing; script-supporting; `colgroup`*	empty	globals; `shadowrootmode`; `shadowrootdelegatesfocus`; `shadowrootclonable`; `shadowrootserializable`	`HTMLTemplateElement`
`textarea`	Multiline text controls	flow; phrasing; interactive; listed; labelable; submittable; resettable; form-associated; palpable	phrasing	text	globals; `autocomplete`; `cols`; `dirname`; `disabled`; `form`; `maxlength`; `minlength`; `name`; `placeholder`; `readonly`; `required`; `rows`; `wrap`	`HTMLTextAreaElement`
`tfoot`	Group of footer rows in a table	none	`table`	`tr`; script-supporting elements	globals	`HTMLTableSectionElement`
`th`	Table header cell	interactive*	`tr`	flow*	globals; `colspan`; `rowspan`; `headers`; `scope`; `abbr`	`HTMLTableCellElement`
`thead`	Group of heading rows in a table	none	`table`	`tr`; script-supporting elements	globals	`HTMLTableSectionElement`
`time`	Machine-readable equivalent of date- or time-related data	flow; phrasing; palpable	phrasing	phrasing	globals; `datetime`	`HTMLTimeElement`
`title`	Document title	metadata	`head`	text*	globals	`HTMLTitleElement`
`tr`	Table row	none	`table`; `thead`; `tbody`; `tfoot`	`th`*; `td`; script-supporting elements	globals	`HTMLTableRowElement`
`track`	Timed text track	none	`audio`; `video`	empty	globals; `default`; `kind`; `label`; `src`; `srclang`	`HTMLTrackElement`
`u`	Unarticulated annotation	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`ul`	List	flow; palpable*	flow	`li`; script-supporting elements	globals	`HTMLUListElement`
`var`	Variable	flow; phrasing; palpable	phrasing	phrasing	globals	`HTMLElement`
`video`	Video player	flow; phrasing; embedded; interactive; palpable	phrasing	`source`; `track`; transparent*	globals; `src`; `crossorigin`; `poster`; `preload`; `autoplay`; `playsinline`; `loop`; `muted`; `controls`; `width`; `height`	`HTMLVideoElement`
`wbr`	Line breaking opportunity	flow; phrasing	phrasing	empty	globals	`HTMLElement`
autonomous custom elements	Author-defined elements	flow; phrasing; palpable	flow; phrasing	transparent	globals; any, as decided by the element's author	Supplied by the element's author (inherits from `HTMLElement`)

List of elements

Element

Description

List of element content categories
Category	Elements	Elements with exceptions
Metadata content	`base`; `link`; `meta`; `noscript`; `script`; `style`; `template`; `title`	—
Flow content	`a`; `abbr`; `address`; `article`; `aside`; `audio`; `b`; `bdi`; `bdo`; `blockquote`; `br`; `button`; `canvas`; `cite`; `code`; `data`; `datalist`; `del`; `details`; `dfn`; `dialog`; `div`; `dl`; `em`; `embed`; `fieldset`; `figure`; `footer`; `form`; `h1`; `h2`; `h3`; `h4`; `h5`; `h6`; `header`; `hgroup`; `hr`; `i`; `iframe`; `img`; `input`; `ins`; `kbd`; `label`; `map`; `mark`; MathML `math`; `menu`; `meter`; `nav`; `noscript`; `object`; `ol`; `output`; `p`; `picture`; `pre`; `progress`; `q`; `ruby`; `s`; `samp`; `script`; `search`; `section`; `select`; `slot`; `small`; `span`; `strong`; `sub`; `sup`; SVG `svg`; `table`; `template`; `textarea`; `time`; `u`; `ul`; `var`; `video`; `wbr`; autonomous custom elements; Text	`area` (if it is a descendant of a `map` element); `link` (if it is allowed in the body); `main` (if it is a hierarchically correct `main` element); `meta` (if the `itemprop` attribute is present)
Sectioning content	`article`; `aside`; `nav`; `section`	—
Heading content	`h1`; `h2`; `h3`; `h4`; `h5`; `h6`; `hgroup`	—
Phrasing content	`a`; `abbr`; `audio`; `b`; `bdi`; `bdo`; `br`; `button`; `canvas`; `cite`; `code`; `data`; `datalist`; `del`; `dfn`; `em`; `embed`; `i`; `iframe`; `img`; `input`; `ins`; `kbd`; `label`; `map`; `mark`; MathML `math`; `meter`; `noscript`; `object`; `output`; `picture`; `progress`; `q`; `ruby`; `s`; `samp`; `script`; `select`; `slot`; `small`; `span`; `strong`; `sub`; `sup`; SVG `svg`; `template`; `textarea`; `time`; `u`; `var`; `video`; `wbr`; autonomous custom elements; Text	`area` (if it is a descendant of a `map` element); `link` (if it is allowed in the body); `meta` (if the `itemprop` attribute is present)
Embedded content	`audio`; `canvas`; `embed`; `iframe`; `img`; MathML `math`; `object`; `picture`; SVG `svg`; `video`	—
Interactive content	`button`; `details`; `embed`; `iframe`; `label`; `select`; `textarea`	`a` (if the `href` attribute is present); `audio` (if the `controls` attribute is present); `img` (if the `usemap` attribute is present); `input` (if the `type` attribute is not in the Hidden state); `video` (if the `controls` attribute is present)
Form-associated elements	`button`; `fieldset`; `input`; `label`; `object`; `output`; `select`; `textarea`; `img`; form-associated custom elements	—
Listed elements	`button`; `fieldset`; `input`; `object`; `output`; `select`; `textarea`; form-associated custom elements	—
Submittable elements	`button`; `input`; `select`; `textarea`; form-associated custom elements	—
Resettable elements	`input`; `output`; `select`; `textarea`; form-associated custom elements	—
Autocapitalize-and-autocorrect inheriting elements	`button`; `fieldset`; `input`; `output`; `select`; `textarea`	—
Labelable elements	`button`; `input`; `meter`; `output`; `progress`; `select`; `textarea`; form-associated custom elements	—
Palpable content	`a`; `abbr`; `address`; `article`; `aside`; `b`; `bdi`; `bdo`; `blockquote`; `button`; `canvas`; `cite`; `code`; `data`; `del`; `details`; `dfn`; `div`; `em`; `embed`; `fieldset`; `figure`; `footer`; `form`; `h1`; `h2`; `h3`; `h4`; `h5`; `h6`; `header`; `hgroup`; `i`; `iframe`; `img`; `ins`; `kbd`; `label`; `main`; `map`; `mark`; MathML `math`; `meter`; `nav`; `object`; `output`; `p`; `picture`; `pre`; `progress`; `q`; `ruby`; `s`; `samp`; `search`; `section`; `select`; `small`; `span`; `strong`; `sub`; `sup`; SVG `svg`; `table`; `textarea`; `time`; `u`; `var`; `video`; autonomous custom elements	`audio` (if the `controls` attribute is present); `dl` (if the element's children include at least one name-value group); `input` (if the `type` attribute is not in the Hidden state); `menu` (if the element's children include at least one `li` element); `ol` (if the element's children include at least one `li` element); `ul` (if the element's children include at least one `li` element); Text that is not inter-element whitespace
Script-supporting elements	`script`; `template`	—

Category

Elements

Elements with exceptions

Metadata content

base; link; meta; noscript; script; style; template; title

—

Flow content

a; abbr; address; article; aside; audio; b; bdi; bdo; blockquote; br; button; canvas; cite; code; data; datalist; del; details; dfn; dialog; div; dl; em; embed; fieldset; figure; footer; form; h1; h2; h3; h4; h5; h6; header; hgroup; hr; i; iframe; img; input; ins; kbd; label; map; mark; MathML math; ; meter; nav; noscript; object; ol; output; p; picture; pre; progress; q; ruby; s; samp; script; search; section; select; slot; small; span; strong; sub; sup; SVG svg; table; template; textarea; time; u; ul; var; video; wbr; autonomous custom elements; Text

area (if it is a descendant of a map element); link (if it is allowed in the body); main (if it is a hierarchically correct main element); meta (if the itemprop attribute is present)

Sectioning content

article; aside; nav; section

—

Heading content

h1; h2; h3; h4; h5; h6; hgroup

—

Phrasing content

a; abbr; audio; b; bdi; bdo; br; button; canvas; cite; code; data; datalist; del; dfn; em; embed; i; iframe; img; input; ins; kbd; label; map; mark; MathML math; meter; noscript; object; output; picture; progress; q; ruby; s; samp; script; select; slot; small; span; strong; sub; sup; SVG svg; template; textarea; time; u; var; video; wbr; autonomous custom elements; Text

area (if it is a descendant of a map element); link (if it is allowed in the body); meta (if the itemprop attribute is present)

Embedded content

audio; canvas; embed; iframe; img; MathML math; object; picture; SVG svg; video

—

Interactive content

button; details; embed; iframe; label; select; textarea

a (if the href attribute is present); audio (if the controls attribute is present); img (if the usemap attribute is present); input (if the type attribute is not in the Hidden state); video (if the controls attribute is present)

Form-associated elements

button; fieldset; input; label; object; output; select; textarea; img; form-associated custom elements

—

Listed elements

button; fieldset; input; object; output; select; textarea; form-associated custom elements

—

Submittable elements

button; input; select; textarea; form-associated custom elements

—

Resettable elements

input; output; select; textarea; form-associated custom elements

—

Autocapitalize-and-autocorrect inheriting elements

button; fieldset; input; output; select; textarea

—

Labelable elements

button; input; meter; output; progress; select; textarea; form-associated custom elements

—

Palpable content

a; abbr; address; article; aside; b; bdi; bdo; blockquote; button; canvas; cite; code; data; del; details; dfn; div; em; embed; fieldset; figure; footer; form; h1; h2; h3; h4; h5; h6; header; hgroup; i; iframe; img; ins; kbd; label; main; map; mark; MathML math; meter; nav; object; output; p; picture; pre; progress; q; ruby; s; samp; search; section; select; small; span; strong; sub; sup; SVG svg; table; textarea; time; u; var; video; autonomous custom elements

audio (if the controls attribute is present); dl (if the element's children include at least one name-value group); input (if the type attribute is not in the Hidden state); (if the element's children include at least one li element); ol (if the element's children include at least one li element); ul (if the element's children include at least one li element); Text that is not inter-element whitespace

Script-supporting elements

script; template

—

Attributes

List of attributes (excluding event handler content attributes)
Attribute	Element(s)	Description	Value
`abbr`	`th`	Alternative label to use for the header cell when referencing the cell in other contexts	Text*
`accept`	`input`	Hint for expected file type in file upload controls	Set of comma-separated tokens* consisting of valid MIME type strings with no parameters or `audio/`, `video/`, or `image/*`
`accept-charset`	`form`	Character encodings to use for form submission	ASCII case-insensitive match for "`UTF-8`"
`accesskey`	HTML elements	Keyboard shortcut to activate or focus element	Ordered set of unique space-separated tokens, none of which are identical to another, each consisting of one code point in length
`action`	`form`	URL to use for form submission	Valid non-empty URL potentially surrounded by spaces
`allow`	`iframe`	Permissions policy to be applied to the `iframe`'s contents	Serialized permissions policy
`allowfullscreen`	`iframe`	Whether to allow the `iframe`'s contents to use `requestFullscreen()`	Boolean attribute
`alpha`	`input`	Allow the color's alpha component to be set	Boolean attribute
`alt`	`area`; `img`; `input`	Replacement text for use when images are not available	Text*
`as`	`link`	Potential destination for a preload request (for `rel`="`preload`" and `rel`="`modulepreload`")	script-like destination, for `rel`="`modulepreload`"
`async`	`script`	Execute script when available, without blocking while fetching	Boolean attribute
`autocapitalize`	HTML elements	Recommended autocapitalization behavior (for supported input methods)	"`on`"; "`off`"; "`none`"; "`sentences`"; "`words`"; "`characters`"
`autocomplete`	`form`	Default setting for autofill feature for controls in the form	"`on`"; "`off`"
`autocomplete`	`input`; `select`; `textarea`	Hint for form autofill feature	Autofill field name and related tokens*
`autocorrect`	HTML elements	Recommended autocorrection behavior (for supported input methods)	"`on`"; "`off`"
`autofocus`	HTML elements	Automatically focus the element when the page is loaded	Boolean attribute
`autoplay`	`audio`; `video`	Hint that the media resource can be started automatically when the page is loaded	Boolean attribute
`blocking`	`link`; `script`; `style`	Whether the element is potentially render-blocking	Unordered set of unique space-separated tokens*
`charset`	`meta`	Character encoding declaration	"`utf-8`"
`checked`	`input`	Whether the control is checked	Boolean attribute
`cite`	`blockquote`; `del`; `ins`; `q`	Link to the source of the quotation or more information about the edit	Valid URL potentially surrounded by spaces
`class`	HTML elements	Classes to which the element belongs	Set of space-separated tokens
`closedby`	`dialog`	Which user actions will close the dialog	"`any`"; "`closerequest`"; "`none`";
`color`	`link`	Color to use when customizing a site's icon (for `rel`="`mask-icon`")	CSS <color>
`colorspace`	`input`	The color space of the serialized color	"`limited-srgb`"; "`display-p3`"
`cols`	`textarea`	Maximum number of characters per line	Valid non-negative integer greater than zero
`colspan`	`td`; `th`	Number of columns that the cell is to span	Valid non-negative integer greater than zero
`command`	`button`	Indicates to the targeted element which action to take.	"`toggle-popover`"; "`show-popover`"; "`hide-popover`"; "`close`"; "`show-modal`"; a custom command keyword
`commandfor`	`button`	Targets another element to be invoked.	ID*
`content`	`meta`	Value of the element	Text*
`contenteditable`	HTML elements	Whether the element is editable	"`true`"; "`plaintext-only`"; "`false`"
`controls`	`audio`; `video`	Show user agent controls	Boolean attribute
`coords`	`area`	Coordinates for the shape to be created in an image map	Valid list of floating-point numbers*
`crossorigin`	`audio`; `img`; `link`; `script`; `video`	How the element handles crossorigin requests	"`anonymous`"; "`use-credentials`"
`data`	`object`	Address of the resource	Valid non-empty URL potentially surrounded by spaces
`datetime`	`del`; `ins`	Date and (optionally) time of the change	Valid date string with optional time
`datetime`	`time`	Machine-readable value	Valid month string, valid date string, valid yearless date string, valid time string, valid local date and time string, valid time-zone offset string, valid global date and time string, valid week string, valid non-negative integer, or valid duration string
`decoding`	`img`	Decoding hint to use when processing this image for presentation	"`sync`"; "`async`"; "`auto`"
`default`	`track`	Enable the track if no other text track is more suitable	Boolean attribute
`defer`	`script`	Defer script execution	Boolean attribute
`dir`	HTML elements	The text directionality of the element	"`ltr`"; "`rtl`"; "`auto`"
`dir`	`bdo`	The text directionality of the element	"`ltr`"; "`rtl`"
`dirname`	`input`; `textarea`	Name of form control to use for sending the element's directionality in form submission	Text*
`disabled`	`button`; `input`; `optgroup`; `option`; `select`; `textarea`; form-associated custom elements	Whether the form control is disabled	Boolean attribute
`disabled`	`fieldset`	Whether the descendant form controls, except any inside `legend`, are disabled	Boolean attribute
`disabled`	`link`	Whether the link is disabled	Boolean attribute
`download`	`a`; `area`	Whether to download the resource instead of navigating to it, and its filename if so	Text
`draggable`	HTML elements	Whether the element is draggable	"`true`"; "`false`"
`enctype`	`form`	Entry list encoding type to use for form submission	"`application/x-www-form-urlencoded`"; "`multipart/form-data`"; "`text/plain`"
`enterkeyhint`	HTML elements	Hint for selecting an enter key action	"`enter`"; "`done`"; "`go`"; "`next`"; "`previous`"; "`search`"; "`send`"
`fetchpriority`	`img`; `link`; `script`	Sets the fetches initiated by the element	"`auto`"; "`high`"; "`low`"
`for`	`label`	Associate the label with form control	ID*
`for`	`output`	Specifies controls from which the output was calculated	Unordered set of unique space-separated tokens consisting of IDs*
`form`	`button`; `fieldset`; `input`; `object`; `output`; `select`; `textarea`; form-associated custom elements	Associates the element with a `form` element	ID*
`formaction`	`button`; `input`	URL to use for form submission	Valid non-empty URL potentially surrounded by spaces
`formenctype`	`button`; `input`	Entry list encoding type to use for form submission	"`application/x-www-form-urlencoded`"; "`multipart/form-data`"; "`text/plain`"
`formmethod`	`button`; `input`	Variant to use for form submission	"`GET`"; "`POST`"; "`dialog`"
`formnovalidate`	`button`; `input`	Bypass form control validation for form submission	Boolean attribute
`formtarget`	`button`; `input`	Navigable for form submission	Valid navigable target name or keyword
`headers`	`td`; `th`	The header cells for this cell	Unordered set of unique space-separated tokens consisting of IDs*
`height`	`canvas`; `embed`; `iframe`; `img`; `input`; `object`; `source` (in `picture`); `video`	Vertical dimension	Valid non-negative integer
`hidden`	HTML elements	Whether the element is relevant	"`until-found`"; "`hidden`"; the empty string
`high`	`meter`	Low limit of high range	Valid floating-point number*
`href`	`a`; `area`	Address of the hyperlink	Valid URL potentially surrounded by spaces
`href`	`link`	Address of the hyperlink	Valid non-empty URL potentially surrounded by spaces
`href`	`base`	Document base URL	Valid URL potentially surrounded by spaces
`hreflang`	`a`; `link`	Language of the linked resource	Valid BCP 47 language tag
`http-equiv`	`meta`	Pragma directive	"`content-type`"; "`default-style`"; "`refresh`"; "`x-ua-compatible`"; "`content-security-policy`"
`id`	HTML elements	The element's ID	Text*
`imagesizes`	`link`	Image sizes for different page layouts (for `rel`="`preload`")	Valid source size list
`imagesrcset`	`link`	Images to use in different situations, e.g., high-resolution displays, small monitors, etc. (for `rel`="`preload`")	Comma-separated list of image candidate strings
`inert`	HTML elements	Whether the element is inert.	Boolean attribute
`inputmode`	HTML elements	Hint for selecting an input modality	"`none`"; "`text`"; "`tel`"; "`email`"; "`url`"; "`numeric`"; "`decimal`"; "`search`"
`integrity`	`link`; `script`	Integrity metadata used in Subresource Integrity checks [SRI]	Text
`is`	HTML elements	Creates a customized built-in element	Valid custom element name of a defined customized built-in element
`ismap`	`img`	Whether the image is a server-side image map	Boolean attribute
`itemid`	HTML elements	Global identifier for a microdata item	Valid URL potentially surrounded by spaces
`itemprop`	HTML elements	Property names of a microdata item	Unordered set of unique space-separated tokens consisting of valid absolute URLs, defined property names, or text*
`itemref`	HTML elements	Referenced elements	Unordered set of unique space-separated tokens consisting of IDs*
`itemscope`	HTML elements	Introduces a microdata item	Boolean attribute
`itemtype`	HTML elements	Item types of a microdata item	Unordered set of unique space-separated tokens consisting of valid absolute URLs*
`kind`	`track`	The type of text track	"`subtitles`"; "`captions`"; "`descriptions`"; "`chapters`"; "`metadata`"
`label`	`optgroup`; `option`; `track`	User-visible label	Text
`lang`	HTML elements	Language of the element	Valid BCP 47 language tag or the empty string
`list`	`input`	List of autocomplete options	ID*
`loading`	`iframe`; `img`	Used when determining loading deferral	"`lazy`"; "`eager`"
`loop`	`audio`; `video`	Whether to loop the media resource	Boolean attribute
`low`	`meter`	High limit of low range	Valid floating-point number*
`max`	`input`	Maximum value	Varies*
`max`	`meter`; `progress`	Upper bound of range	Valid floating-point number*
`maxlength`	`input`; `textarea`	Maximum length of value	Valid non-negative integer
`media`	`link`; `meta`; `source`; `style`	Applicable media	Valid media query list
`method`	`form`	Variant to use for form submission	"`GET`"; "`POST`"; "`dialog`"
`min`	`input`	Minimum value	Varies*
`min`	`meter`	Lower bound of range	Valid floating-point number*
`minlength`	`input`; `textarea`	Minimum length of value	Valid non-negative integer
`multiple`	`input`; `select`	Whether to allow multiple values	Boolean attribute
`muted`	`audio`; `video`	Whether to mute the media resource by default	Boolean attribute
`name`	`button`; `fieldset`; `input`; `output`; `select`; `textarea`; form-associated custom elements	Name of the element to use for form submission and in the `form.elements` API	Text*
`name`	`details`	Name of group of mutually-exclusive `details` elements	Text*
`name`	`form`	Name of form to use in the `document.forms` API	Text*
`name`	`iframe`; `object`	Name of content navigable	Valid navigable target name or keyword
`name`	`map`	Name of image map to reference from the `usemap` attribute	Text*
`name`	`meta`	Metadata name	Text*
`name`	`slot`	Name of shadow tree slot	Text
`nomodule`	`script`	Prevents execution in user agents that support module scripts	Boolean attribute
`nonce`	HTML elements	Cryptographic nonce used in Content Security Policy checks [CSP]	Text
`novalidate`	`form`	Bypass form control validation for form submission	Boolean attribute
`open`	`details`	Whether the details are visible	Boolean attribute
`open`	`dialog`	Whether the dialog box is showing	Boolean attribute
`optimum`	`meter`	Optimum value in gauge	Valid floating-point number*
`pattern`	`input`	Pattern to be matched by the form control's value	Regular expression matching the JavaScript Pattern production
`ping`	`a`; `area`	URLs to ping	Set of space-separated tokens consisting of valid non-empty URLs
`placeholder`	`input`; `textarea`	User-visible label to be placed within the form control	Text*
`playsinline`	`video`	Encourage the user agent to display video content within the element's playback area	Boolean attribute
`popover`	HTML elements	Makes the element a popover element	"`auto`"; "`manual`";
`popovertarget`	`button`; `input`	Targets a popover element to toggle, show, or hide	ID*
`popovertargetaction`	`button`; `input`	Indicates whether a targeted popover element is to be toggled, shown, or hidden	"`toggle`"; "`show`"; "`hide`"
`poster`	`video`	Poster frame to show prior to video playback	Valid non-empty URL potentially surrounded by spaces
`preload`	`audio`; `video`	Hints how much buffering the media resource will likely need	"`none`"; "`metadata`"; "`auto`"
`readonly`	`input`; `textarea`	Whether to allow the value to be edited by the user	Boolean attribute
`readonly`	form-associated custom elements	Affects `willValidate`, plus any behavior added by the custom element author	Boolean attribute
`referrerpolicy`	`a`; `area`; `iframe`; `img`; `link`; `script`	fetches initiated by the element	Referrer policy
`rel`	`a`; `area`	Relationship between the location in the document containing the hyperlink and the destination resource	Unordered set of unique space-separated tokens*
`rel`	`link`	Relationship between the document containing the hyperlink and the destination resource	Unordered set of unique space-separated tokens*
`required`	`input`; `select`; `textarea`	Whether the control is required for form submission	Boolean attribute
`reversed`	`ol`	Number the list backwards	Boolean attribute
`rows`	`textarea`	Number of lines to show	Valid non-negative integer greater than zero
`rowspan`	`td`; `th`	Number of rows that the cell is to span	Valid non-negative integer
`sandbox`	`iframe`	Security rules for nested content	Unordered set of unique space-separated tokens, ASCII case-insensitive, consisting of "`allow-downloads`" "`allow-forms`" "`allow-modals`" "`allow-orientation-lock`" "`allow-pointer-lock`" "`allow-popups`" "`allow-popups-to-escape-sandbox`" "`allow-presentation`" "`allow-same-origin`" "`allow-scripts`" "`allow-top-navigation`" "`allow-top-navigation-by-user-activation`" "`allow-top-navigation-to-custom-protocols`"
`scope`	`th`	Specifies which cells the header cell applies to	"`row`"; "`col`"; "`rowgroup`"; "`colgroup`"
`selected`	`option`	Whether the option is selected by default	Boolean attribute
`shadowrootclonable`	`template`	Sets clonable on a declarative shadow root	Boolean attribute
`shadowrootdelegatesfocus`	`template`	Sets delegates focus on a declarative shadow root	Boolean attribute
`shadowrootmode`	`template`	Enables streaming declarative shadow roots	"`open`"; "`closed`"
`shadowrootserializable`	`template`	Sets serializable on a declarative shadow root	Boolean attribute
`shape`	`area`	The kind of shape to be created in an image map	"`circle`"; "`default`"; "`poly`"; "`rect`"
`size`	`input`; `select`	Size of the control	Valid non-negative integer greater than zero
`sizes`	`link`	Sizes of the icons (for `rel`="`icon`")	Unordered set of unique space-separated tokens, ASCII case-insensitive, consisting of sizes*
`sizes`	`img`; `source`	Image sizes for different page layouts	Valid source size list
`slot`	HTML elements	The element's desired slot	Text
`span`	`col`; `colgroup`	Number of columns spanned by the element	Valid non-negative integer greater than zero
`spellcheck`	HTML elements	Whether the element is to have its spelling and grammar checked	"`true`"; "`false`"; the empty string
`src`	`audio`; `embed`; `iframe`; `img`; `input`; `script`; `source` (in `video` or `audio`); `track`; `video`	Address of the resource	Valid non-empty URL potentially surrounded by spaces
`srcdoc`	`iframe`	A document to render in the `iframe`	The source of an `iframe` `srcdoc` document*
`srclang`	`track`	Language of the text track	Valid BCP 47 language tag
`srcset`	`img`; `source`	Images to use in different situations, e.g., high-resolution displays, small monitors, etc.	Comma-separated list of image candidate strings
`start`	`ol`	Starting value of the list	Valid integer
`step`	`input`	Granularity to be matched by the form control's value	Valid floating-point number greater than zero, or "`any`"
`style`	HTML elements	Presentational and formatting instructions	CSS declarations*
`tabindex`	HTML elements	Whether the element is focusable and sequentially focusable, and the relative order of the element for the purposes of sequential focus navigation	Valid integer
`target`	`a`; `area`	Navigable for hyperlink navigation	Valid navigable target name or keyword
`target`	`base`	Default navigable for hyperlink navigation and form submission	Valid navigable target name or keyword
`target`	`form`	Navigable for form submission	Valid navigable target name or keyword
`title`	HTML elements	Advisory information for the element	Text
`title`	`abbr`; `dfn`	Full term or expansion of abbreviation	Text
`title`	`input`	Description of pattern (when used with `pattern` attribute)	Text
`title`	`link`	Title of the link	Text
`title`	`link`; `style`	CSS style sheet set name	Text
`translate`	HTML elements	Whether the element is to be translated when the page is localized	"`yes`"; "`no`"
`type`	`a`; `link`	Hint for the type of the referenced resource	Valid MIME type string
`type`	`button`	Type of button	"`submit`"; "`reset`"; "`button`"
`type`	`embed`; `object`; `source`	Type of embedded resource	Valid MIME type string
`type`	`input`	Type of form control	`input` type keyword
`type`	`ol`	Kind of list marker	"`1`"; "`a`"; "`A`"; "`i`"; "`I`"
`type`	`script`	Type of script	"`module`"; a JavaScript MIME type essence match
`usemap`	`img`	Name of image map to use	Valid hash-name reference*
`value`	`button`; `option`	Value to be used for form submission	Text
`value`	`data`	Machine-readable value	Text*
`value`	`input`	Value of the form control	Varies*
`value`	`li`	Ordinal value of the list item	Valid integer
`value`	`meter`; `progress`	Current value of the element	Valid floating-point number
`width`	`canvas`; `embed`; `iframe`; `img`; `input`; `object`; `source` (in `picture`); `video`	Horizontal dimension	Valid non-negative integer
`wrap`	`textarea`	How the value of the form control is to be wrapped for form submission	"`soft`"; "`hard`"
`writingsuggestions`	HTML elements	Whether the element can offer writing suggestions or not.	"`true`"; "`false`"; the empty string

List of attributes (excluding event handler content attributes)

Attribute

Element(s)

Description

Value

abbr

th

Alternative label to use for the header cell when referencing the cell in other contexts

Text*

accept

input

Hint for expected file type in file upload controls

Set of comma-separated tokens* consisting of valid MIME type strings with no parameters or audio/*, video/*, or image/*

accept-charset

form

Character encodings to use for form submission

ASCII case-insensitive match for "UTF-8"

accesskey

HTML elements

Keyboard shortcut to activate or focus element

Ordered set of unique space-separated tokens, none of which are identical to another, each consisting of one code point in length

action

form

URL to use for form submission

Valid non-empty URL potentially surrounded by spaces

allow

iframe

Permissions policy to be applied to the iframe's contents

Serialized permissions policy

allowfullscreen

iframe

Whether to allow the iframe's contents to use requestFullscreen()

Boolean attribute

alpha

input

Allow the color's alpha component to be set

Boolean attribute

alt

area; img; input

Replacement text for use when images are not available

Text*

as

link

Potential destination for a preload request (for rel="preload" and rel="modulepreload")

script-like destination, for rel="modulepreload"

async

script

Execute script when available, without blocking while fetching

Boolean attribute

autocapitalize

HTML elements

Recommended autocapitalization behavior (for supported input methods)

"on"; "off"; "none"; "sentences"; "words"; "characters"

autocomplete

form

Default setting for autofill feature for controls in the form

"on"; "off"

autocomplete

input; select; textarea

Hint for form autofill feature

Autofill field name and related tokens*

autocorrect

HTML elements

Recommended autocorrection behavior (for supported input methods)

"on"; "off"

autofocus

HTML elements

Automatically focus the element when the page is loaded

Boolean attribute

autoplay

audio; video

Hint that the media resource can be started automatically when the page is loaded

Boolean attribute

blocking

link; script; style

Whether the element is potentially render-blocking

Unordered set of unique space-separated tokens*

charset

meta

Character encoding declaration

"utf-8"

checked

input

Whether the control is checked

Boolean attribute

cite

blockquote; del; ins; q

Link to the source of the quotation or more information about the edit

Valid URL potentially surrounded by spaces

class

HTML elements

Classes to which the element belongs

Set of space-separated tokens

closedby

dialog

Which user actions will close the dialog

"any"; "closerequest"; "none";

color

link

Color to use when customizing a site's icon (for rel="mask-icon")

CSS <color>

colorspace

input

The color space of the serialized color

"limited-srgb"; "display-p3"

cols

textarea

Maximum number of characters per line

Valid non-negative integer greater than zero

colspan

td; th

Number of columns that the cell is to span

Valid non-negative integer greater than zero

command

button

Indicates to the targeted element which action to take.

""; ""; ""; "close"; ""; a custom command keyword

commandfor

button

Targets another element to be invoked.

ID*

content

meta

Value of the element

Text*

contenteditable

HTML elements

Whether the element is editable

"true"; "plaintext-only"; "false"

controls

audio; video

Show user agent controls

Boolean attribute

coords

area

Coordinates for the shape to be created in an image map

Valid list of floating-point numbers*

crossorigin

audio; img; link; script; video

How the element handles crossorigin requests

"anonymous"; "use-credentials"

data

object

Address of the resource

Valid non-empty URL potentially surrounded by spaces

datetime

del; ins

Date and (optionally) time of the change

Valid date string with optional time

datetime

time

Machine-readable value

Valid month string, valid date string, valid yearless date string, valid time string, valid local date and time string, valid time-zone offset string, valid global date and time string, valid week string, valid non-negative integer, or valid duration string

decoding

img

Decoding hint to use when processing this image for presentation

"sync"; "async"; "auto"

default

track

Enable the track if no other text track is more suitable

Boolean attribute

defer

script

Defer script execution

Boolean attribute

dir

HTML elements

The text directionality of the element

"ltr"; "rtl"; "auto"

dir

bdo

The text directionality of the element

"ltr"; "rtl"

dirname

input; textarea

Name of form control to use for sending the element's directionality in form submission

Text*

disabled

button; input; optgroup; option; select; textarea; form-associated custom elements

Whether the form control is disabled

Boolean attribute

disabled

fieldset

Whether the descendant form controls, except any inside legend, are disabled

Boolean attribute

disabled

link

Whether the link is disabled

Boolean attribute

download

a; area

Whether to download the resource instead of navigating to it, and its filename if so

Text

draggable

HTML elements

Whether the element is draggable

"true"; "false"

enctype

form

Entry list encoding type to use for form submission

"application/x-www-form-urlencoded"; "multipart/form-data"; "text/plain"

enterkeyhint

HTML elements

Hint for selecting an enter key action

"enter"; "done"; "go"; "next"; "previous"; "search"; "send"

fetchpriority

img; link; script

Sets the fetches initiated by the element

"auto"; "high"; "low"

for

label

Associate the label with form control

ID*

for

output

Specifies controls from which the output was calculated

Unordered set of unique space-separated tokens consisting of IDs*

form

button; fieldset; input; object; output; select; textarea; form-associated custom elements

Associates the element with a form element

ID*

formaction

button; input

URL to use for form submission

Valid non-empty URL potentially surrounded by spaces

formenctype

button; input

Entry list encoding type to use for form submission

"application/x-www-form-urlencoded"; "multipart/form-data"; "text/plain"

formmethod

button; input

Variant to use for form submission

"GET"; "POST"; "dialog"

formnovalidate

button; input

Bypass form control validation for form submission

Boolean attribute

formtarget

button; input

Navigable for form submission

Valid navigable target name or keyword

headers

td; th

The header cells for this cell

Unordered set of unique space-separated tokens consisting of IDs*

height

canvas; embed; iframe; img; input; object; source (in picture); video

Vertical dimension

Valid non-negative integer

hidden

HTML elements

Whether the element is relevant

"until-found"; "hidden"; the empty string

high

meter

Low limit of high range

Valid floating-point number*

href

a; area

Address of the hyperlink

Valid URL potentially surrounded by spaces

href

link

Address of the hyperlink

Valid non-empty URL potentially surrounded by spaces

href

base

Document base URL

Valid URL potentially surrounded by spaces

hreflang

a; link

Language of the linked resource

Valid BCP 47 language tag

http-equiv

meta

Pragma directive

"content-type"; "default-style"; "refresh"; "x-ua-compatible"; "content-security-policy"

id

HTML elements

The element's ID

Text*

imagesizes

link

Image sizes for different page layouts (for rel="preload")

Valid source size list

imagesrcset

link

Images to use in different situations, e.g., high-resolution displays, small monitors, etc. (for rel="preload")

Comma-separated list of image candidate strings

inert

HTML elements

Whether the element is inert.

Boolean attribute

inputmode

HTML elements

Hint for selecting an input modality

"none"; "text"; "tel"; "email"; "url"; "numeric"; "decimal"; "search"

integrity

link; script

Integrity metadata used in Subresource Integrity checks [SRI]

Text

is

HTML elements

Creates a customized built-in element

Valid custom element name of a defined customized built-in element

ismap

img

Whether the image is a server-side image map

Boolean attribute

itemid

HTML elements

Global identifier for a microdata item

Valid URL potentially surrounded by spaces

itemprop

HTML elements

Property names of a microdata item

Unordered set of unique space-separated tokens consisting of valid absolute URLs, defined property names, or text*

itemref

HTML elements

Referenced elements

Unordered set of unique space-separated tokens consisting of IDs*

itemscope

HTML elements

Introduces a microdata item

Boolean attribute

itemtype

HTML elements

Item types of a microdata item

Unordered set of unique space-separated tokens consisting of valid absolute URLs*

kind

track

The type of text track

"subtitles"; "captions"; "descriptions"; "chapters"; "metadata"

label

optgroup; option; track

User-visible label

Text

lang

HTML elements

Language of the element

Valid BCP 47 language tag or the empty string

list

input

List of autocomplete options

ID*

loading

iframe; img

Used when determining loading deferral

"lazy"; "eager"

loop

audio; video

Whether to loop the media resource

Boolean attribute

low

meter

High limit of low range

Valid floating-point number*

max

input

Maximum value

Varies*

max

meter; progress

Upper bound of range

Valid floating-point number*

maxlength

input; textarea

Maximum length of value

Valid non-negative integer

media

link; meta; source; style

Applicable media

Valid media query list

method

form

Variant to use for form submission

"GET"; "POST"; "dialog"

min

input

Minimum value

Varies*

min

meter

Lower bound of range

Valid floating-point number*

minlength

input; textarea

Minimum length of value

Valid non-negative integer

multiple

input; select

Whether to allow multiple values

Boolean attribute

muted

audio; video

Whether to mute the media resource by default

Boolean attribute

name

button; fieldset; input; output; select; textarea; form-associated custom elements

Name of the element to use for form submission and in the form.elements API

Text*

name

details

Name of group of mutually-exclusive details elements

Text*

name

form

Name of form to use in the document.forms API

Text*

name

iframe; object

Name of content navigable

Valid navigable target name or keyword

name

map

Name of image map to reference from the usemap attribute

Text*

name

meta

Metadata name

Text*

name

slot

Name of shadow tree slot

Text

nomodule

script

Prevents execution in user agents that support module scripts

Boolean attribute

nonce

HTML elements

Cryptographic nonce used in Content Security Policy checks [CSP]

Text

novalidate

form

Bypass form control validation for form submission

Boolean attribute

open

details

Whether the details are visible

Boolean attribute

open

dialog

Whether the dialog box is showing

Boolean attribute

optimum

meter

Optimum value in gauge

Valid floating-point number*

pattern

input

Pattern to be matched by the form control's value

Regular expression matching the JavaScript Pattern production

ping

a; area

URLs to ping

Set of space-separated tokens consisting of valid non-empty URLs

placeholder

input; textarea

User-visible label to be placed within the form control

Text*

playsinline

video

Encourage the user agent to display video content within the element's playback area

Boolean attribute

popover

Makes the element a element

""; "";

popovertarget

button; input

Targets a popover element to toggle, show, or hide

ID*

popovertargetaction

button; input

Indicates whether a targeted popover element is to be toggled, shown, or hidden

"toggle"; "show"; "hide"

poster

video

Poster frame to show prior to video playback

Valid non-empty URL potentially surrounded by spaces

preload

audio; video

Hints how much buffering the media resource will likely need

"none"; "metadata"; "auto"

readonly

input; textarea

Whether to allow the value to be edited by the user

Boolean attribute

readonly

form-associated custom elements

Affects willValidate, plus any behavior added by the custom element author

Boolean attribute

referrerpolicy

a; area; iframe; img; link; script

fetches initiated by the element

Referrer policy

rel

a; area

Relationship between the location in the document containing the hyperlink and the destination resource

Unordered set of unique space-separated tokens*

rel

link

Relationship between the document containing the hyperlink and the destination resource

Unordered set of unique space-separated tokens*

required

input; select; textarea

Whether the control is required for form submission

Boolean attribute

reversed

ol

Number the list backwards

Boolean attribute

rows

textarea

Number of lines to show

Valid non-negative integer greater than zero

rowspan

td; th

Number of rows that the cell is to span

Valid non-negative integer

sandbox

iframe

Security rules for nested content

Unordered set of unique space-separated tokens, ASCII case-insensitive, consisting of

"allow-downloads"
"allow-forms"
"allow-modals"
"allow-orientation-lock"
"allow-pointer-lock"
"allow-popups"
"allow-popups-to-escape-sandbox"
"allow-presentation"
"allow-same-origin"
"allow-scripts"
"allow-top-navigation"
"allow-top-navigation-by-user-activation"
"allow-top-navigation-to-custom-protocols"

scope

th

Specifies which cells the header cell applies to

"row"; "col"; "rowgroup"; "colgroup"

selected

option

Whether the option is selected by default

Boolean attribute

shadowrootclonable

template

Sets clonable on a declarative shadow root

Boolean attribute

shadowrootdelegatesfocus

template

Sets delegates focus on a declarative shadow root

Boolean attribute

shadowrootmode

template

Enables streaming declarative shadow roots

"open"; "closed"

shadowrootserializable

template

Sets serializable on a declarative shadow root

Boolean attribute

shape

area

The kind of shape to be created in an image map

"circle"; "default"; "poly"; "rect"

size

input; select

Size of the control

Valid non-negative integer greater than zero

sizes

link

Sizes of the icons (for rel="icon")

Unordered set of unique space-separated tokens, ASCII case-insensitive, consisting of sizes*

sizes

img; source

Image sizes for different page layouts

Valid source size list

slot

HTML elements

The element's desired slot

Text

span

col; colgroup

Number of columns spanned by the element

Valid non-negative integer greater than zero

spellcheck

HTML elements

Whether the element is to have its spelling and grammar checked

"true"; "false"; the empty string

src

audio; embed; iframe; img; input; script; source (in video or audio); track; video

Address of the resource

Valid non-empty URL potentially surrounded by spaces

srcdoc

iframe

A document to render in the iframe

The source of an iframe srcdoc document*

srclang

track

Language of the text track

Valid BCP 47 language tag

srcset

img; source

Images to use in different situations, e.g., high-resolution displays, small monitors, etc.

Comma-separated list of image candidate strings

start

ol

Starting value of the list

Valid integer

step

input

Granularity to be matched by the form control's value

Valid floating-point number greater than zero, or "any"

style

HTML elements

Presentational and formatting instructions

CSS declarations*

tabindex

HTML elements

Whether the element is focusable and sequentially focusable, and the relative order of the element for the purposes of

Valid integer

target

a; area

Navigable for hyperlink navigation

Valid navigable target name or keyword

target

base

Default navigable for hyperlink navigation and form submission

Valid navigable target name or keyword

target

form

Navigable for form submission

Valid navigable target name or keyword

title

HTML elements

Advisory information for the element

Text

title

abbr; dfn

Full term or expansion of abbreviation

Text

title

input

Description of pattern (when used with pattern attribute)

Text

title

link

Title of the link

Text

title

link; style

CSS style sheet set name

Text

translate

HTML elements

Whether the element is to be translated when the page is localized

"yes"; "no"

type

a; link

Hint for the type of the referenced resource

Valid MIME type string

type

button

Type of button

"submit"; "reset"; "button"

type

embed; object; source

Type of embedded resource

Valid MIME type string

type

input

Type of form control

input type keyword

type

ol

Kind of list marker

"1"; "a"; "A"; "i"; "I"

type

script

Type of script

"module"; a JavaScript MIME type essence match

usemap

img

Name of image map to use

Valid hash-name reference*

value

button; option

Value to be used for form submission

Text

value

data

Machine-readable value

Text*

value

input

Value of the form control

Varies*

value

li

Ordinal value of the list item

Valid integer

value

meter; progress

Current value of the element

Valid floating-point number

width

canvas; embed; iframe; img; input; object; source (in picture); video

Horizontal dimension

Valid non-negative integer

wrap

textarea

How the value of the form control is to be wrapped for form submission

"soft"; "hard"

writingsuggestions

HTML elements

Whether the element can offer writing suggestions or not.

"true"; "false"; the empty string

An asterisk (*) in a cell indicates that the actual rules are more complicated than indicated in the table above.

HTMLElement/drop_event

Support in all current engines.

Firefox9+Safari3.1+Chrome1+

Opera12+Edge79+

Edge (Legacy)12+Internet Explorer9+

Firefox Android?Safari iOS?Chrome Android?WebView Android?Samsung Internet?Opera Android12+

List of event handler content attributes
Attribute	Element(s)	Description	Value
`onafterprint`	`body`	`afterprint` event handler for `Window` object	Event handler content attribute
`onauxclick`	HTML elements	`auxclick` event handler	Event handler content attribute
`onbeforeinput`	HTML elements	`beforeinput` event handler	Event handler content attribute
`onbeforematch`	HTML elements	`beforematch` event handler	Event handler content attribute
`onbeforeprint`	`body`	`beforeprint` event handler for `Window` object	Event handler content attribute
`onbeforeunload`	`body`	`beforeunload` event handler for `Window` object	Event handler content attribute
`onbeforetoggle`	HTML elements	`beforetoggle` event handler	Event handler content attribute
`onblur`	HTML elements	`blur` event handler	Event handler content attribute
`oncancel`	HTML elements	`cancel` event handler	Event handler content attribute
`oncanplay`	HTML elements	`canplay` event handler	Event handler content attribute
`oncanplaythrough`	HTML elements	`canplaythrough` event handler	Event handler content attribute
`onchange`	HTML elements	`change` event handler	Event handler content attribute
`onclick`	HTML elements	`click` event handler	Event handler content attribute
`onclose`	HTML elements	`close` event handler	Event handler content attribute
`oncommand`	HTML elements	`command` event handler	Event handler content attribute
`oncontextlost`	HTML elements	`contextlost` event handler	Event handler content attribute
`oncontextmenu`	HTML elements	`contextmenu` event handler	Event handler content attribute
`oncontextrestored`	HTML elements	`contextrestored` event handler	Event handler content attribute
`oncopy`	HTML elements	`copy` event handler	Event handler content attribute
`oncuechange`	HTML elements	`cuechange` event handler	Event handler content attribute
`oncut`	HTML elements	`cut` event handler	Event handler content attribute
`ondblclick`	HTML elements	`dblclick` event handler	Event handler content attribute
`ondrag`	HTML elements	`drag` event handler	Event handler content attribute
`ondragend`	HTML elements	`dragend` event handler	Event handler content attribute
`ondragenter`	HTML elements	`dragenter` event handler	Event handler content attribute
`ondragleave`	HTML elements	`dragleave` event handler	Event handler content attribute
`ondragover`	HTML elements	`dragover` event handler	Event handler content attribute
`ondragstart`	HTML elements	`dragstart` event handler	Event handler content attribute
`ondrop`	HTML elements	`drop` event handler	Event handler content attribute
`ondurationchange`	HTML elements	`durationchange` event handler	Event handler content attribute
`onemptied`	HTML elements	`emptied` event handler	Event handler content attribute
`onended`	HTML elements	`ended` event handler	Event handler content attribute
`onerror`	HTML elements	`error` event handler	Event handler content attribute
`onfocus`	HTML elements	`focus` event handler	Event handler content attribute
`onformdata`	HTML elements	`formdata` event handler	Event handler content attribute
`onhashchange`	`body`	`hashchange` event handler for `Window` object	Event handler content attribute
`oninput`	HTML elements	`input` event handler	Event handler content attribute
`oninvalid`	HTML elements	`invalid` event handler	Event handler content attribute
`onkeydown`	HTML elements	`keydown` event handler	Event handler content attribute
`onkeypress`	HTML elements	`keypress` event handler	Event handler content attribute
`onkeyup`	HTML elements	`keyup` event handler	Event handler content attribute
`onlanguagechange`	`body`	`languagechange` event handler for `Window` object	Event handler content attribute
`onload`	HTML elements	`load` event handler	Event handler content attribute
`onloadeddata`	HTML elements	`loadeddata` event handler	Event handler content attribute
`onloadedmetadata`	HTML elements	`loadedmetadata` event handler	Event handler content attribute
`onloadstart`	HTML elements	`loadstart` event handler	Event handler content attribute
`onmessage`	`body`	`message` event handler for `Window` object	Event handler content attribute
`onmessageerror`	`body`	`messageerror` event handler for `Window` object	Event handler content attribute
`onmousedown`	HTML elements	`mousedown` event handler	Event handler content attribute
`onmouseenter`	HTML elements	`mouseenter` event handler	Event handler content attribute
`onmouseleave`	HTML elements	`mouseleave` event handler	Event handler content attribute
`onmousemove`	HTML elements	`mousemove` event handler	Event handler content attribute
`onmouseout`	HTML elements	`mouseout` event handler	Event handler content attribute
`onmouseover`	HTML elements	`mouseover` event handler	Event handler content attribute
`onmouseup`	HTML elements	`mouseup` event handler	Event handler content attribute
`onoffline`	`body`	`offline` event handler for `Window` object	Event handler content attribute
`ononline`	`body`	`online` event handler for `Window` object	Event handler content attribute
`onpagehide`	`body`	`pagehide` event handler for `Window` object	Event handler content attribute
`onpagereveal`	`body`	`pagereveal` event handler for `Window` object	Event handler content attribute
`onpageshow`	`body`	`pageshow` event handler for `Window` object	Event handler content attribute
`onpageswap`	`body`	`pageswap` event handler for `Window` object	Event handler content attribute
`onpaste`	HTML elements	`paste` event handler	Event handler content attribute
`onpause`	HTML elements	`pause` event handler	Event handler content attribute
`onplay`	HTML elements	`play` event handler	Event handler content attribute
`onplaying`	HTML elements	`playing` event handler	Event handler content attribute
`onpopstate`	`body`	`popstate` event handler for `Window` object	Event handler content attribute
`onprogress`	HTML elements	`progress` event handler	Event handler content attribute
`onratechange`	HTML elements	`ratechange` event handler	Event handler content attribute
`onreset`	HTML elements	`reset` event handler	Event handler content attribute
`onresize`	HTML elements	`resize` event handler	Event handler content attribute
`onrejectionhandled`	`body`	`rejectionhandled` event handler for `Window` object	Event handler content attribute
`onscroll`	HTML elements	`scroll` event handler	Event handler content attribute
`onscrollend`	HTML elements	`scrollend` event handler	Event handler content attribute
`onsecuritypolicyviolation`	HTML elements	`securitypolicyviolation` event handler	Event handler content attribute
`onseeked`	HTML elements	`seeked` event handler	Event handler content attribute
`onseeking`	HTML elements	`seeking` event handler	Event handler content attribute
`onselect`	HTML elements	`select` event handler	Event handler content attribute
`onslotchange`	HTML elements	`slotchange` event handler	Event handler content attribute
`onstalled`	HTML elements	`stalled` event handler	Event handler content attribute
`onstorage`	`body`	`storage` event handler for `Window` object	Event handler content attribute
`onsubmit`	HTML elements	`submit` event handler	Event handler content attribute
`onsuspend`	HTML elements	`suspend` event handler	Event handler content attribute
`ontimeupdate`	HTML elements	`timeupdate` event handler	Event handler content attribute
`ontoggle`	HTML elements	`toggle` event handler	Event handler content attribute
`onunhandledrejection`	`body`	`unhandledrejection` event handler for `Window` object	Event handler content attribute
`onunload`	`body`	`unload` event handler for `Window` object	Event handler content attribute
`onvolumechange`	HTML elements	`volumechange` event handler	Event handler content attribute
`onwaiting`	HTML elements	`waiting` event handler	Event handler content attribute
`onwheel`	HTML elements	`wheel` event handler	Event handler content attribute

Element interfaces

This section is non-normative.

List of interfaces for elements
Element(s)	Interface(s)
`a`	`HTMLAnchorElement` : `HTMLElement`
`abbr`	`HTMLElement`
`address`	`HTMLElement`
`area`	`HTMLAreaElement` : `HTMLElement`
`article`	`HTMLElement`
`aside`	`HTMLElement`
`audio`	`HTMLAudioElement` : `HTMLMediaElement` : `HTMLElement`
`b`	`HTMLElement`
`base`	`HTMLBaseElement` : `HTMLElement`
`bdi`	`HTMLElement`
`bdo`	`HTMLElement`
`blockquote`	`HTMLQuoteElement` : `HTMLElement`
`body`	`HTMLBodyElement` : `HTMLElement`
`br`	`HTMLBRElement` : `HTMLElement`
`button`	`HTMLButtonElement` : `HTMLElement`
`canvas`	`HTMLCanvasElement` : `HTMLElement`
`caption`	`HTMLTableCaptionElement` : `HTMLElement`
`cite`	`HTMLElement`
`code`	`HTMLElement`
`col`	`HTMLTableColElement` : `HTMLElement`
`colgroup`	`HTMLTableColElement` : `HTMLElement`
`data`	`HTMLDataElement` : `HTMLElement`
`datalist`	`HTMLDataListElement` : `HTMLElement`
`dd`	`HTMLElement`
`del`	`HTMLModElement` : `HTMLElement`
`details`	`HTMLDetailsElement` : `HTMLElement`
`dfn`	`HTMLElement`
`dialog`	`HTMLDialogElement` : `HTMLElement`
`div`	`HTMLDivElement` : `HTMLElement`
`dl`	`HTMLDListElement` : `HTMLElement`
`dt`	`HTMLElement`
`em`	`HTMLElement`
`embed`	`HTMLEmbedElement` : `HTMLElement`
`fieldset`	`HTMLFieldSetElement` : `HTMLElement`
`figcaption`	`HTMLElement`
`figure`	`HTMLElement`
`footer`	`HTMLElement`
`form`	`HTMLFormElement` : `HTMLElement`
`h1`	`HTMLHeadingElement` : `HTMLElement`
`h2`	`HTMLHeadingElement` : `HTMLElement`
`h3`	`HTMLHeadingElement` : `HTMLElement`
`h4`	`HTMLHeadingElement` : `HTMLElement`
`h5`	`HTMLHeadingElement` : `HTMLElement`
`h6`	`HTMLHeadingElement` : `HTMLElement`
`head`	`HTMLHeadElement` : `HTMLElement`
`header`	`HTMLElement`
`hgroup`	`HTMLElement`
`hr`	`HTMLHRElement` : `HTMLElement`
`html`	`HTMLHtmlElement` : `HTMLElement`
`i`	`HTMLElement`
`iframe`	`HTMLIFrameElement` : `HTMLElement`
`img`	`HTMLImageElement` : `HTMLElement`
`input`	`HTMLInputElement` : `HTMLElement`
`ins`	`HTMLModElement` : `HTMLElement`
`kbd`	`HTMLElement`
`label`	`HTMLLabelElement` : `HTMLElement`
`legend`	`HTMLLegendElement` : `HTMLElement`
`li`	`HTMLLIElement` : `HTMLElement`
`link`	`HTMLLinkElement` : `HTMLElement`
`main`	`HTMLElement`
`map`	`HTMLMapElement` : `HTMLElement`
`mark`	`HTMLElement`
`menu`	`HTMLMenuElement` : `HTMLElement`
`meta`	`HTMLMetaElement` : `HTMLElement`
`meter`	`HTMLMeterElement` : `HTMLElement`
`nav`	`HTMLElement`
`noscript`	`HTMLElement`
`object`	`HTMLObjectElement` : `HTMLElement`
`ol`	`HTMLOListElement` : `HTMLElement`
`optgroup`	`HTMLOptGroupElement` : `HTMLElement`
`option`	`HTMLOptionElement` : `HTMLElement`
`output`	`HTMLOutputElement` : `HTMLElement`
`p`	`HTMLParagraphElement` : `HTMLElement`
`picture`	`HTMLPictureElement` : `HTMLElement`
`pre`	`HTMLPreElement` : `HTMLElement`
`progress`	`HTMLProgressElement` : `HTMLElement`
`q`	`HTMLQuoteElement` : `HTMLElement`
`rp`	`HTMLElement`
`rt`	`HTMLElement`
`ruby`	`HTMLElement`
`s`	`HTMLElement`
`samp`	`HTMLElement`
`search`	`HTMLElement`
`script`	`HTMLScriptElement` : `HTMLElement`
`section`	`HTMLElement`
`select`	`HTMLSelectElement` : `HTMLElement`
`slot`	`HTMLSlotElement` : `HTMLElement`
`small`	`HTMLElement`
`source`	`HTMLSourceElement` : `HTMLElement`
`span`	`HTMLSpanElement` : `HTMLElement`
`strong`	`HTMLElement`
`style`	`HTMLStyleElement` : `HTMLElement`
`sub`	`HTMLElement`
`summary`	`HTMLElement`
`sup`	`HTMLElement`
`table`	`HTMLTableElement` : `HTMLElement`
`tbody`	`HTMLTableSectionElement` : `HTMLElement`
`td`	`HTMLTableCellElement` : `HTMLElement`
`template`	`HTMLTemplateElement` : `HTMLElement`
`textarea`	`HTMLTextAreaElement` : `HTMLElement`
`tfoot`	`HTMLTableSectionElement` : `HTMLElement`
`th`	`HTMLTableCellElement` : `HTMLElement`
`thead`	`HTMLTableSectionElement` : `HTMLElement`
`time`	`HTMLTimeElement` : `HTMLElement`
`title`	`HTMLTitleElement` : `HTMLElement`
`tr`	`HTMLTableRowElement` : `HTMLElement`
`track`	`HTMLTrackElement` : `HTMLElement`
`u`	`HTMLElement`
`ul`	`HTMLUListElement` : `HTMLElement`
`var`	`HTMLElement`
`video`	`HTMLVideoElement` : `HTMLMediaElement` : `HTMLElement`
`wbr`	`HTMLElement`
custom elements	supplied by the element's author (inherits from `HTMLElement`)

All interfaces

This section is non-normative.

Events

This section is non-normative.

The following table lists events fired by this document, excluding those already defined in media element events and drag-and-drop events.

List of events
Event	Interface	Interesting targets	Description
`DOMContentLoaded` Event	`Document`	Fired at the `Document` once the parser has finished
`afterprint` Event	`Window`	Fired at the `Window` after printing
`beforeprint` Event	`Window`	Fired at the `Window` before printing
`beforematch` Event	Elements	Fired on elements with the `hidden=until-found` attribute before they are revealed.
`beforetoggle` HTMLElement/beforetoggle_event Support in all current engines. Firefox🔰 114+Safaripreview+Chrome114+ Opera?Edge114+ Edge (Legacy)?Internet ExplorerNo Firefox Android?Safari iOS?Chrome Android?WebView Android?Samsung Internet?Opera Android?	`ToggleEvent`	Elements	Fired on elements with the `popover` attribute when they are transitioning between showing and hidden
`beforeunload` Window/beforeunload_event Support in all current engines. Firefox1+Safari3+Chrome1+ Opera12+Edge79+ Edge (Legacy)12+Internet Explorer4+ Firefox Android?Safari iOS1+Chrome Android?WebView Android?Samsung Internet?Opera Android12+	`BeforeUnloadEvent`	`Window`	Fired at the `Window` when the page is about to be unloaded, in case the page would like to show a warning prompt
`blur`	`Event`	`Window`, elements	Fired at nodes when they stop being focused
`cancel` Event	`CloseWatcher`, `dialog` elements, `input` elements	Fired at `CloseWatcher` objects or `dialog` elements when they receive a close request, or at `input` elements whose type attribute is in the File state when the user does not change their selection
`change` Event	Form controls	Fired at controls when the user commits a value change (see also the `input` event)
`click`	`PointerEvent`	Elements	Normally a mouse event; also synthetically fired at an element before its activation behavior is run, when an element is activated from a non-pointer input device (e.g. a keyboard)
`close` Event	`CloseWatcher`, `dialog` elements, `MessagePort`	Fired at `CloseWatcher` objects or `dialog` elements when they are closed via a close request or via web developer code, or at `MessagePort` objects when disentangled
`command`	`CommandEvent`	Elements	Fired at elements when they handle a user invocation, via a `commandfor` attribute.
`connect` SharedWorkerGlobalScope/connect_event Support in all current engines. Firefox29+Safari16+Chrome4+ Opera10.6+Edge79+ Edge (Legacy)?Internet ExplorerNo Firefox Android?Safari iOS16+Chrome Android?WebView Android37+Samsung Internet?Opera Android11+	`MessageEvent`	`SharedWorkerGlobalScope`	Fired at a shared worker's global scope when a new client connects
`contextlost` Event	`canvas` elements, `OffscreenCanvas` objects	Fired when the corresponding `CanvasRenderingContext2D` or `OffscreenCanvasRenderingContext2D` is lost
`contextrestored` Event	`canvas` elements, `OffscreenCanvas` objects	Fired when the corresponding `CanvasRenderingContext2D` or `OffscreenCanvasRenderingContext2D` is restored after being lost
`currententrychange`	`NavigationCurrentEntryChangeEvent`	`Navigation`	Fired when `navigation.currentEntry` changes
`dispose`	`Event`	`NavigationHistoryEntry`	Fired when the session history entry corresponding to the `NavigationHistoryEntry` has been permanently evicted from session history and can no longer be traversed to
`error` Event or `ErrorEvent`	Global scope objects, `Worker` objects, elements, networking-related objects	Fired when unexpected errors occur (e.g. networking errors, script errors, decoding errors)
`focus`	`Event`	`Window`, elements	Fired at nodes gaining focus
`formdata` HTMLFormElement/formdata_event Support in all current engines. Firefox72+Safari15+Chrome77+ Opera?Edge79+ Edge (Legacy)?Internet ExplorerNo Firefox Android?Safari iOS?Chrome Android?WebView Android?Samsung Internet?Opera Android?	`FormDataEvent`	`form` elements	Fired at a `form` element when it is constructing the entry list
`hashchange` Window/hashchange_event Support in all current engines. Firefox3.6+Safari5+Chrome8+ Opera10.6+Edge79+ Edge (Legacy)12+Internet Explorer8+ Firefox Android?Safari iOS5+Chrome Android?WebView Android37+Samsung Internet?Opera Android11+	`HashChangeEvent`	`Window`	Fired at the `Window` when the URL changes
`input`	`Event`	Elements	Fired when the user changes the `contenteditable` element's content, or the form control's value. See also the `change` event for form controls.
`invalid` Event	Form controls	Fired at controls during form validation if they do not satisfy their constraints
`languagechange` Event	Global scope objects	Fired at the global scope object when the user's preferred languages change
`load`	`Event`	`Window`, elements	Fired at the `Window` when the document has finished loading; fired at an element containing a resource (e.g. `img`, `embed`) when its resource has finished loading
`message` Worker/message_event Support in all current engines. Firefox3.5+Safari4+Chrome4+ Opera10.6+Edge79+ Edge (Legacy)12+Internet Explorer10+ Firefox Android?Safari iOS5+Chrome Android?WebView Android?Samsung Internet?Opera Android11.5+	`MessageEvent`	`Window`, `EventSource`, `MessagePort`, `BroadcastChannel`, `DedicatedWorkerGlobalScope`, `Worker`, `ServiceWorkerContainer`	Fired at an object when it receives a message
`messageerror` Worker/messageerror_event Support in all current engines. Firefox57+Safari16.4+Chrome60+ Opera?Edge79+ Edge (Legacy)18Internet ExplorerNo Firefox Android?Safari iOS?Chrome Android?WebView Android?Samsung Internet?Opera Android47+	`MessageEvent`	`Window`, `MessagePort`, `BroadcastChannel`, `DedicatedWorkerGlobalScope`, `Worker`, `ServiceWorkerContainer`	Fired at an object when it receives a message that cannot be deserialized
`navigate`	`NavigateEvent`	`Navigation`	Fired before the navigable navigates, reloads, traverses, or otherwise changes its URL
`navigateerror`	`ErrorEvent`	`Navigation`	Fired when a navigation does not complete successfully
`navigatesuccess`	`Event`	`Navigation`	Fired when a navigation completes successfully
`offline` Event	Global scope objects	Fired at the global scope object when the network connections fails
`online` Event	Global scope objects	Fired at the global scope object when the network connections returns
`open` Event	`EventSource`	Fired at `EventSource` objects when a connection is established
`pageswap`	`PageSwapEvent`	`Window`	Fired at the `Window` right before a document is unloaded as a result of a navigation.
`pagehide` Window/pagehide_event Support in all current engines. Firefox6+Safari5+Chrome3+ Opera?Edge79+ Edge (Legacy)12+Internet Explorer11 Firefox Android?Safari iOS?Chrome Android?WebView Android37+Samsung Internet?Opera Android?	`PageTransitionEvent`	`Window`	Fired at the `Window` when the page's session history entry stops being the active entry
`pagereveal`	`PageRevealEvent`	`Window`	Fired at the `Window` when the page begins to render for the first time after it has been initialized or reactivated
`pageshow` Window/pageshow_event Support in all current engines. Firefox6+Safari5+Chrome3+ Opera?Edge79+ Edge (Legacy)12+Internet Explorer11 Firefox Android?Safari iOS?Chrome Android?WebView Android37+Samsung Internet?Opera Android?	`PageTransitionEvent`	`Window`	Fired at the `Window` when the page's session history entry becomes the active entry
`pointercancel`	`PointerEvent`	Elements and `Text` nodes	Fired at the source node when the user attempts to initiate a drag-and-drop operation
`popstate` Window/popstate_event Support in all current engines. Firefox4+Safari5+Chrome5+ Opera11.5+Edge79+ Edge (Legacy)12+Internet Explorer10+ Firefox Android?Safari iOS?Chrome Android?WebView Android37+Samsung Internet?Opera Android11.5+	`PopStateEvent`	`Window`	Fired at the `Window` when in some cases of session history traversal
`readystatechange` Event	`Document`	Fired at the `Document` when it finishes parsing and again when all its subresources have finished loading
`rejectionhandled`	`PromiseRejectionEvent`	Global scope objects	Fired at global scope objects when a previously-unhandled promise rejection becomes handled
`reset` Event	`form` elements	Fired at a `form` element when it is reset
`select` Event	Form controls	Fired at form controls when their text selection is adjusted (whether by an API or by the user)
`storage` Window/storage_event Support in all current engines. Firefox45+Safari4+Chrome1+ Opera?Edge79+ Edge (Legacy)15+Internet Explorer9+ Firefox Android?Safari iOS4+Chrome Android?WebView Android37+Samsung Internet?Opera Android?	`StorageEvent`	`Window`	Fired at `Window` event when the corresponding `localStorage` or `sessionStorage` storage areas change
`submit` HTMLFormElement/submit_event Support in all current engines. Firefox1+Safari3+Chrome1+ Opera8+Edge79+ Edge (Legacy)12+Internet Explorer9+ Firefox Android?Safari iOS1+Chrome Android?WebView Android?Samsung Internet?Opera Android10.1+	`SubmitEvent`	`form` elements	Fired at a `form` element when it is submitted
`toggle` HTMLElement/toggle_event Support in all current engines. Firefox🔰 114+Safaripreview+Chrome114+ Opera?Edge114+ Edge (Legacy)?Internet ExplorerNo Firefox Android?Safari iOS?Chrome Android?WebView Android?Samsung Internet?Opera Android?	`ToggleEvent`	`details` and popover elements	Fired at `details` elements when they open or close; fired on elements with the `popover` attribute when they are transitioning between showing and hidden
`unhandledrejection` Window/unhandledrejection_event Support in all current engines. Firefox69+Safari11+Chrome49+ Opera?Edge79+ Edge (Legacy)?Internet ExplorerNo Firefox Android?Safari iOS11.3+Chrome Android?WebView Android?Samsung Internet?Opera Android?	`PromiseRejectionEvent`	Global scope objects	Fired at global scope objects when a promise rejection goes unhandled
`unload` Event	`Window`	Fired at the `Window` object when the page is going away
`visibilitychange` Event	`Document`	Fired at the `Document` object when the page becomes visible or hidden to the user

HTTP headers

This section is non-normative.

The following HTTP request headers are defined by this specification:

The following HTTP response headers are defined by this specification:

`Cross-Origin-Embedder-Policy`
`Cross-Origin-Embedder-Policy-Report-Only`
`Cross-Origin-Opener-Policy`
`Cross-Origin-Opener-Policy-Report-Only`
`Origin-Agent-Cluster`
`Refresh`
`X-Frame-Options`

MIME types

This section is non-normative.

The following MIME types are mentioned in this specification:

application/atom+xml: Atom [ATOM]
application/json: JSON [JSON]
application/octet-stream: Generic binary data [RFC2046]
application/microdata+json: Microdata as JSON
application/rss+xml: RSS
application/wasm: WebAssembly [WASM]
application/x-www-form-urlencoded: Form submission
application/xhtml+xml: HTML
application/xml: XML [XML] [RFC7303]
image/gif: GIF images [GIF]
image/jpeg: JPEG images [JPEG]
image/png: PNG images [PNG]
image/svg+xml: SVG images [SVG]
multipart/form-data: Form submission [RFC7578]
multipart/mixed: Generic mixed content [RFC2046]
multipart/x-mixed-replace: Streaming server push
text/css: CSS [CSS]
text/event-stream: Server-sent event streams
text/javascript: JavaScript [JAVASCRIPT] [RFC9239]
text/json: JSON (legacy type)
text/plain: Generic plain text [RFC2046] [RFC3676]
text/html: HTML
text/ping: Hyperlink auditing
text/uri-list: List of URLs [RFC2483]
text/vcard: vCard [RFC6350]
text/vtt: WebVTT [WEBVTT]
text/xml: XML [XML] [RFC7303]
video/mp4: MPEG-4 video [RFC4337]
video/mpeg: MPEG video [RFC2046]

HTML

Index

Elements

Element content categories

Attributes

Element interfaces

All interfaces

Events

HTTP headers

MIME types