jQuery addClass example

Change class name on click in jQuery

by Serge Zahharenko

HTML

<div class="banner-message"> :) </div>
<button>Add more divs</button>

CSS

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

div {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  margin:10px;
  display:inline-block;
}

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

jQuery(document)
.on('click','div',function(e){
 alert(jQuery(this).attr('class'))
})
.on('click','button',function(e){
	for(i=0;i<3;i++) {
 		jQuery('body').append('<div class="'+revisedRandId()+'">'+revisedRandId()+'</div>')
 	}
});
function revisedRandId() {
     return Math.random().toString(36).replace(/[^a-z]+/g, '').substr(2, 10);
}