JSFiddle - React, Tailwind, and code Playground

HTML

<div class="demo-select"></div>
<div class="demo-select"></div>
<div class="demo-select"></div>

CSS

.demo-select{ border:1px solid; height:200px; width:200px;}
.test{color:red}

JavaScript

var selected = $('.demo-select');
	selected.click(function() {
        $(this).toggleClass('selected');
		if($(this).hasClass('selected')){
			alert(1);
			$(this).append('<p class="test">check</p>')
			}
		else{
			alert(2);
			$(this).find('.test').remove();
			}
    });