How can I get the current class of a div with jQuery?

Just get the class attribute:

var div1Class = $('#div1').attr('class');

Example

<div id="div1" class="accordion accordion_active">

To check the above div for classes contained in it

var a = ("#div1").attr('class');
console.log(a);

console output

accordion accordion_active

$("#div1").attr("class")

$('#div1').attr('class')

will return a string of the classes. Turn it into an array of class names

var classNames = $('#div1').attr('class').split(' ');

var classname=$('#div1').attr('class')

try this

$("#div1").attr("class")

Simply by

var divClass = $("#div1").attr("class")

You can do some other stuff to manipulate element's class

$("#div1").addClass("foo"); // add class 'foo' to div1
$("#div1").removeClass("foo"); // remove class 'foo' from div1
$("#div1").toggleClass("foo"); // toggle class 'foo'

var className=$('selector').attr('class');

or

var className=$(this).attr('class');

the classname of the current element

From now on is better to use the .prop() function instead of the .attr() one.

Here the jQuery documentation:

As of jQuery 1.6, the .attr() method returns undefined for attributes that have not been set. In addition, .attr() should not be used on plain objects, arrays, the window, or the document. To retrieve and change DOM properties, use the .prop() method.

var div1Class = $('#div1').prop('class');

The addClass method in jQuery has a currentClass built in property. You can use it inside a function call. Like so:

<div>First div</div>
<div class="red">Second div</div>
<div>Third div</div>
<div>Fourth div</div>


<script>
$("div").addClass(function(index, currentClass) {
var addedClass;
if ( currentClass === "red" ) {
addedClass = "green"; }
return addedClass;
});
</script>

<div  id="my_id" class="my_class"></div>

if that is the first div then address it like so:

document.write("div CSS class: " + document.getElementsByTagName('div')[0].className);

alternatively do this:

document.write("alternative way: " + document.getElementById('my_id').className);

It yields the following results:

div CSS class: my_class
alternative way: my_class

if you want to look for a div that has more than 1 class try this:

Html:

<div class="class1 class2 class3" id="myDiv">

Jquery:

var check = $( "#myDiv" ).hasClass( "class2" ).toString();

ouput:

true