Question

I’m trying to read all class names from HTML element in the following way. But it doesn’t work:

HTML

<div id="test" class="fff aaa ccc" >hello world</div>

JS

if ($('#test').attr('class') != '')
{
   // Read classes
    var all_classes = $('#test').attr('class');

    // Output
    $('body').append('Classnames: '+all_classes+' ');

}

Example
http://www.jsfiddle.net/AQgqU/8/

Can somebody help me?

Answer 1

You can do this way:

var classes = $('#test').attr('class').split(' ');

alert(classes[0]); // first class
alert(classes[1]); // second class
alert(classes[2]); // third class

Or you can use a loop:

for(var i = 0; i < classes.length; i++) {
  alert(classes[i]);
}

Update:

As suggested by @KennyTM, with above code there was possibility of space coming around a class name. You can use the $.trim function of jQuery to remove any space.