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 July 2015.
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® 2025 Language Specification # sec-relational-operators |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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Greater than ( a > b ) |
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