easyUI获取tree、combotree节点级别

//easyUI扩展树获取选择的节点级别$.extend($.fn.tree.methods, {    getLevel:function(jq,target){        var l = $(target).parentsUntil("ul.tree","ul");        return l.length+1;    }});
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//通过组合树获取树对象，如果是树控件的话，可以通过$().tree('getSelected');直接获取当前节点var t = $('#shangbdw').combotree('tree');var n = t.tree('getSelected');             //当前选择的节点var lv =  t.tree("getLevel",n.target);    //节点级别