Jquery get element containing child element with specific html value

Question

I would like to use Jquery to add a class to \"li\" element that contains a \"span\" element with a html/val equal to zero.

For Example if my code looks like this:

Answer 1

Here's a fast way to to it:

$('li .num').each(function(){
    if ( $(this).text() == '0') $(this).parent().addClass('disabled');
}); 

With a jsFiddle example.