JSFiddle - React, Tailwind, and code Playground

by Julien Vernet

HTML

<h1 class="test-1">HTML Ipsum Presents</h1>

<p><strong class="test-dsqdsd someclass another-one whynot_underscore">Pellentesque habitant morbi tristique</strong> senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. <em>Aenean ultricies mi vitae est.</em> Mauris placerat eleifend leo. Quisque sit amet est et sapien ullamcorper pharetra. Vestibulum erat wisi, condimentum sed, <code>commodo vitae</code>, ornare sit amet, wisi. Aenean fermentum, elit eget tincidunt condimentum, eros ipsum rutrum orci, sagittis tempus lacus enim ac dui. <a href="#">Donec non enim</a> in turpis pulvinar facilisis. Ut felis.</p>

<h2 class="hello itsme test-3">Header Level 2</h2>

<ol>
    <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
    <li>Aliquam tincidunt mauris eu risus.</li>
</ol>
<blockquote>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus magna. Cras in mi at felis aliquet congue. Ut a est eget ligula molestie gravida. Curabitur massa. Donec eleifend, libero at sagittis mollis, tellus est malesuada tellus, at luctus turpis elit sit amet quam. Vivamus pretium ornare est.</p>
</blockquote>

<h3>Header Level 3</h3>

<ul>
    <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
    <li>Aliquam tincidunt mauris eu risus.</li>
</ul>
<pre><code>
#header h1 a { 
	display: block; 
	width: 300px; 
	height: 80px; 
}
</code></pre>

CSS

[class^="test-"] {
    color: red;
    font-weight: bold;
}
.test-1,
.test-dsqdsd,
.test-3 {
    color: red;
    font-weight: bold;
}

JavaScript

// http://stackoverflow.com/questions/57812/remove-all-classes-that-begin-with-a-certain-string
/*
var classes = $el.attr("class").split(" ").filter(function (item) {
    return item.lastIndexOf("someprefix", 0) !== 0;
});
$el.attr("class", classes.join(" "));
*/

// http://stackoverflow.com/questions/2644299/jquery-removeclass-wildcard/2644364#2644364
$('[class^="test-"]').attr('class',

function (i, c) {
    return c.replace(/\btest-\S+/g, '');
});