如何动态地加入UL和LI元素？

Question

I have a tree view generated dynamically

the idea is to loop into them just to get the some values, but we don't know how many childs every element has.

<ul>
   <li>something here</li>
   <li>something here
        <ul>
           <li></li>
           <li></li>
            ...more and more childs
        </ul>
   </li>

</ul>

Answer 1

function getNode($node) {
  var $children = $node.children();
  if ($children.length) {
    $children.each(function() {
        getNode($(this));
      })
      //Do something with the branch
  } else {
    //Do something with the leaf
  }
}

getNode($('#your_tree_top_node'));

This code will recursively go through your tree until it finds the leaves and allows you to act on the leaves first and then the branches after all the leaves of that branch has been processed.