jQuery add CSS class

Question

I want to remove a css class before adding a new class to an element. If I know which exact class the element has already, I can remove that by

$('#test').removeClass('current_class').addClass('new_class');

But the problem is that #test does not have always same class. So I would like to remove any css class attached attached to #test before adding before adding a new one. How should I do that? Thanks.

Answer 1

$('#test').removeClass();

Will remove any class that the item has you can simply add your new class after that like you are doing now

Answer 2

$('#test').attr('class', '').addClass('new_class');

or

$('#test').removeClass().addClass('new_class');