Symbol.replace

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.

The Symbol.replace static data property represents the well-known symbol Symbol.replace. The String.prototype.replace() and String.prototype.replaceAll() methods look up this symbol on their first argument for the method that replaces substrings matched by the current object.

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

Try it

Value

The well-known symbol Symbol.replace.

Property attributes of Symbol.replace
Writableno
Enumerableno
Configurableno

Examples

Using Symbol.replace

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

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

Specifications

Specification
ECMAScript Language Specification
# sec-symbol.replace

Browser compatibility

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See also