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]()
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® 2025 Language Specification # sec-symbol.matchall |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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matchAll |
Legend
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- Full support
- Full support
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