JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <span name="final_span" id="final_span" class="final" value="">Test</span>
    <p>
    Dong Demo
    </p>
    <div>
    
    </div>
    <button id="showAnswer" href="#" class="btn btn-lg">Click here</button>
</body>

JavaScript

$("#showAnswer").ready(function(handler){
        $("div").text( "Something was selected" ).show().fadeOut( 1000 );
        });