Check if a class `active` exist on element with jquery

Question

Check if a class active exist on an li with a class menu

For example

<li class="menu active">something...</li> 

Answer 1

I think you want to use hasClass()

$('li.menu').hasClass('active'); 

Answer 2

You can retrieve all elements having the 'active' class using the following:

$('.active') 

Checking wether or not there are any would, i belief, be with

if($('.active').length > 0) {     // code }