The Symbol.replace static data property represents the well-known symbol @@replace. The String.prototype.replace method looks up this symbol on its first argument for the method that replaces substrings matched by the current object.
For more information, see RegExp.prototype[@@replace]() and String.prototype.replace.
Value
The well-known symbol @@replace.
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"))); // "#!@?tball"