jQuery addClass example

Change class name on click in jQuery

by Ben Clayton

HTML

<div id="banner-message">
  <textarea id="mytext"><h1>Hello World</h1>&lt;h2&gt;TWO&lt;/h2&gt;</textarea>
	
	<div id="editor1">
	
	</div>
	<div id="editor2">
	
	</div>
  <button>Extract string and replace</button>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#mytext {
  width: 80%;
  height: 100px;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 90%;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
}

#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

JavaScript

// find elements
var $mytext = $("#mytext");
var $button = $("button");
var $editor1 = $("#editor1");

// handle click and add class
$button.on("click", function() {
  var t = $mytext.val();
	console.log(t);
  $mytext.val(t + "&lt;br&gt;");
	
	var html = "<textarea><h1>Hello World</h1></textarea>";
	$editor1.html(html);
	document.getElementById('editor2').innerHTML = html;
	
})