Iterator.prototype[Symbol.iterator]() - JavaScript

__defineGetter__() Deprecated
__defineSetter__() Deprecated
__lookupGetter__() Deprecated
__lookupSetter__() Deprecated
toLocaleString()
__proto__ Deprecated
iterable protocol and allows built-in iterators to be consumed by most syntaxes expecting iterables, such as the this, which is the iterator object itself.

Syntax

iterator[Symbol.iterator]()

None.

The value of iterable, and iterating syntaxes like the for...of loop automatically call this method to obtain the iterator to loop over.

const arrIterator = [1, 2, 3].values();
for (const value of arrIterator) {
  console.log(value);
}
/ Logs: 1, 2, 3

Specification
ECMAScript® 2026 Language Specification # sec-%iteratorprototype%-%symbol.iterator%