Symbol.replace - JavaScript 编辑

The Symbol.replace well-known symbol specifies the method that replaces matched substrings of a string. This function is called by the String.prototype.replace() method.

For more information, see RegExp.prototype[@@replace]() and String.prototype.replace().

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The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Property attributes of Symbol.replace
Writable	no
Enumerable	no
Configurable	no

Examples

Using Symbol.replace

class CustomReplacer {
  constructor(value) {
    this.value = value;
  }
  [Symbol.replace](string) {
    return string.replace(this.value, '#!@?');
  }
}

console.log('football'.replace(new CustomReplacer('foo')));
// expected output: "#!@?tball"

Specifications

Specification
ECMAScript (ECMA-262) The definition of 'Symbol.replace' in that specification.

Browser compatibility

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See also

• Symbol.match
• Symbol.search
• Symbol.split
• RegExp.prototype[@@replace]()