大于（>）
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
大于运算符（>）在左操作数大于右操作数时返回 true，否则返回 false。
尝试一下
console.log(5 > 3);
/ Expected output: true
console.log(3 > 3);
/ Expected output: false
/ Compare bigint to number
console.log(3n > 5);
/ Expected output: false
console.log("ab" > "aa");
/ Expected output: true
语法
js
x > y
描述
操作数比较使用与小于运算符相同的算法，只是两个操作数交换了。
示例
字符串与字符串比较
js
console.log("a" > "b"); / false
console.log("a" > "a"); / false
console.log("a" > "3"); / true
字符串与数值比较
js
console.log("5" > 3); / true
console.log("3" > 3); / false
console.log("3" > 5); / false
console.log("hello" > 5); / false
console.log(5 > "hello"); / false
console.log("5" > 3n); / true
console.log("3" > 5n); / false
数值与数值比较
js
console.log(5 > 3); / true
console.log(3 > 3); / false
console.log(3 > 5); / false
数值与大整型比较
js
console.log(5n > 3); / true
console.log(3 > 5n); / false
比较 Boolean、null、undefined 和 NaN
js
console.log(true > false); / true
console.log(false > true); / false
console.log(true > 0); / true
console.log(true > 1); / false
console.log(null > 0); / false
console.log(1 > null); / true
console.log(undefined > 3); / false
console.log(3 > undefined); / false
console.log(3 > NaN); / false
console.log(NaN > 3); / false
规范
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-relational-operators |