JSFiddle - React, Tailwind, and code Playground

by mcsf

JavaScript

class Foo extends String {
  isCool() {
    return this.match(/cool/)
  }
}

const foo = new Foo('hello');
console.log(foo);
console.log(foo.toString());
console.log(foo.isCool);
console.log(foo.isCool());

console.log(new Foo('this is a cool a'))