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 January 2020.
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]() 和 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"]
值
内置通用符号 Symbol.matchAll。
Symbol.matchAll 的属性特性 | |
|---|---|
| 可写 | 否 |
| 可枚举 | 否 |
| 可配置 | 否 |
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® 2026 Language Specification # sec-symbol.matchall |