JSFiddle - React, Tailwind, and code Playground

by Bacher

HTML

<div id=d></div>    
<div id=c></div>

CSS

#d{
    width: 100px;
    height: 100px;
    border: 1px solid red;    
}

JavaScript

var longFunc = function(){
    var c = 0;
    for(var i=1; i<2000000000; i++)
        c++;
    $("#d").css("background","white");   
    $("#c").append($("<a>").text("1"));
}

$("#d").on("click",function(){
    $("#d").css("background","gray");    
    setTimeout(function(){
        longFunc();
    },1);
});