大于等于(>=)

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.

大于等于运算符(>=)在左操作数大于等于右操作数时返回 true,否则返回 false

尝试一下

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,除了两个操作数为相等的值(在尝试转换后)会返回 true

示例

字符串与字符串比较

js
console.log("a" >= "b"); // false
console.log("a" >= "a"); // true
console.log("a" >= "3"); // true

字符串与数值比较

js
console.log("5" >= 3); // true
console.log("3" >= 3); // true
console.log("3" >= 5); // false

console.log("hello" >= 5); // false
console.log(5 >= "hello"); // false

数值与数值比较

js
console.log(5 >= 3); // true
console.log(3 >= 3); // true
console.log(3 >= 5); // false

数值与大整型比较

js
console.log(5n >= 3); // true
console.log(3 >= 3n); // true
console.log(3 >= 5n); // false

比较 Boolean、null、undefined 和 NaN

js
console.log(true >= false); // true
console.log(true >= true); // true
console.log(false >= true); // false

console.log(true >= 0); // true
console.log(true >= 1); // true

console.log(null >= 0); // true
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 Language Specification
# sec-relational-operators

浏览器兼容性

BCD tables only load in the browser

See also