list - find the deepest LI in a lot of UL and LI using jquery -

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so there tree. it's compiled mysql database using php. problem want find lis don't have ul inside them , more lis....

example: http://i.stack.imgur.com/pet8z.jpg

in example marked lis should selected jquery, because don't have children , that's want.

basically it's tree made categories, if deepest category doesn't have children should considered item , want jquery find items, don't have children.

this whole tree: http://jsfiddle.net/trueskillz/qnrpj/1/

i this(code down below) , check if has children or not , make it's background red(for example) , that's how find 'items' , not 'categories', there must easier way this....

    $("#parttree ul").each(function(){       $(this).find("li").each(function(){           $(this).find("ul").each(function(){               $(this).find("ul").each(function(){                  $(this).css("background-color","red");               });           });       });     });

this not way find items in list... i'm hoping there's easier way...

several options:

var $leaves = $('#parttree li').filter(function() {     return !$(this).has('ul'); });  var $leaves = $('#parttree li:not(:has(ul))');  var $leaves = $('#parttree li').filter(":not(:has(ul))");  var $leaves = $('#parttree li').not(":has(ul)");

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