JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<div class="container">
    <div class="block">text 1</div>
    <div class="block">text 2</div>
    <div class="block">text 3</div>
</div>

JavaScript

$('.container > div').click(function(){
	alert($(this).index())
});