JSFiddle - React, Tailwind, and code Playground

HTML

<h1>TEST JAVASCRIPT READY AND JQUERY READY</h1>

CSS

h1 {
    text-align: center;
}

JavaScript

function init() {
      alert("hello javascript");
    };
    
window.addEventListener("load",init,false);

$(document).ready(function () {
      alert("hello jquery");
    });