JSFiddle - React, Tailwind, and code Playground

by JWells

JavaScript

String.prototype.withPct = function () {
    return this + '%';
};
Number.prototype.withPct = function () {
    return this + '%';
};

var str = '10';
var num = new Number(str)

document.body.innerHTML = str.withPct() +'<br /><br />';
document.body.innerHTML += num.withPct();