JSFiddle - React, Tailwind, and code Playground

by Tymoteusz Czech

HTML

<h2>Click the title!</h2>
<div class="class1">
	<a href="#" class="heads">Title</a>
	<div class="description">
		<p>Class 1 Item 1</p>
	</div>
</div>
<div class="class1">
	<a href="#" class="heads">Title</a>
	<div class="description">
		<p>Class 1 Item 2</p>
	</div>
</div>
<div class="class2">
	<a href="#" class="heads">Title</a>
	<div class="description">
		<p>Class 2 Item 1</p>
	</div>
</div>
<div class="class2">
	<a href="#" class="heads">Title</a>
	<div class="description">
		<p>Class 2 Item 2</p>
	</div>
</div>
<div class="class3">
	<a href="#" class="heads">Title</a>
	<div class="description">
		<p>Class 3 Item 1</p>
	</div>
</div>

CSS

body > div {
    margin: 1em;
    padding: 0.5em 1em 0 1em;
    background: #ddd;
    float: left;
}
h2 {
    padding: 0 1em;
}
a {
    font-size: 1.5em;
    font-weight: bold;
    color: inherit;
    text-decoration: inherit;
}
a:hover {
    text-decoration: underline;
}

JavaScript

$("a").on('click', function(){
    var $t = $(this).parent(); // clicked div.class2 for example
    $t.css("opacity", 1).siblings().css("opacity", 1); // undo selection
    $t.siblings().not("."+$t.attr("class")).css("opacity", 0.5); 
    // hide other classes. Equivalent with selector:
    //$t.siblings(":not(."+$t.attr("class")+")").css("opacity", 0.5); 
});