Symbol.matchAll

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

Symbol.matchAll 内置通用(well-known)符号指定方法返回一个迭代器,该迭代器根据字符串生成正则表达式的匹配项。此函数可以被 String.prototype.matchAll() 方法调用。

详细信息请参阅 RegExp.prototype[Symbol.matchAll]()String.prototype.matchAll()

尝试一下

const re = /[0-9]+/g;
const str = "2016-01-02|2019-03-07";
const result = re[Symbol.matchAll](str);

console.log(Array.from(result, (x) => x[0]));
// Expected output: Array ["2016", "01", "02", "2019", "03", "07"]

内置通用符号 Symbol.matchAll

Symbol.matchAll 的属性特性
可写
可枚举
可配置

示例

使用 Symbol.matchAll

js
const str = "2016-01-02|2019-03-07";
const numbers = {
  *[Symbol.matchAll](str) {
    for (const n of str.matchAll(/[0-9]+/g)) yield n[0];
  },
};
console.log(Array.from(str.matchAll(numbers)));
// ["2016", "01", "02", "2019", "03", "07"]

规范

Specification
ECMAScript® 2025 Language Specification
# sec-symbol.matchall

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
matchAll

Legend

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Full support
Full support

参见