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Showing content from https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Symbol/matchAll below:

Symbol.matchAll - JavaScript | MDN

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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()。

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。

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"]

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