JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<input class="back" type="button" value="Click">

JavaScript

$('.back').on('click', function () {
    console.log(123);
    setTimeout(function(){ 
        $('.back').remove();
    }, 2000);
});