JSFiddle - React, Tailwind, and code Playground

by kodjoe mambi

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="1">div</div>
<div id="2">div</div>
<div id="3">div</div>
<div id="4">div</div>

CSS

div {
    width: 300px;
    float: left;
    padding: 2px;
    margin: 3px;
    background-color: #eee;
  }

JavaScript

$(document).ready(function () {
      var i = 1;
      $('#' + i).css('background-color', 'blue');
    });