JSFiddle - React, Tailwind, and code Playground

HTML

<div id = 'add-foo'>add</div>

JavaScript

var addFooButton = $( '#add-foo' );

addFooButton.click(function(){
    var addedFoo = $( '<div class="foo">bar</div>'+
    			        '<div class="foo">bar</div>'+
    			        '<div class="foo">bar</div>' );
	        $(this).append(addedFoo);
});