JQuery - How do I count the number of elements selected by a selector?

Question

I am using $().fadeOut() to fade items out in a list ( < li> < /li>). When the list is empty I wish to hide a parent object.

I plan on doing this by checking i

Answer 1

Simply use .length against the jQuery collection.

var $elements = $('ul#myUlElement').children('li');
alert($elements.length)