Symbol.split

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.split 指向一个正则表达式的索引处分割字符串的方法。这个方法通过 String.prototype.split() 调用。

详情请参阅 RegExp.prototype[Symbol.split]()String.prototype.split()

尝试一下

class Split1 {
  constructor(value) {
    this.value = value;
  }
  [Symbol.split](string) {
    const index = string.indexOf(this.value);
    return `${this.value}${string.substring(0, index)}/${string.substring(
      index + this.value.length,
    )}`;
  }
}

console.log("foobar".split(new Split1("foo")));
// Expected output: "foo/bar"

内置通用符号 Symbol.split

Symbol.split 的属性特性
可写
可枚举
可配置

示例

自定义反向分割

js
class ReverseSplit {
  [Symbol.split](string) {
    const array = string.split(" ");
    return array.reverse();
  }
}

console.log("Another one bites the dust".split(new ReverseSplit()));
// [ "dust", "the", "bites", "one", "Another" ]

规范

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

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
split

Legend

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Full support
Full support

参阅