JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/css/bootstrap.min.css">
<button id="example" type="button" 
class="btn btn-default" disabled>Text</button>
<button id="example3" type="button" 
class="btn btn-default" disabled>Text</button>

JavaScript

$(document).ready(function(){
   $('#example').prop('disabled', false);
});