Easyui Tree方法扩展

//扩展方法

$.extend($.fn.tree.methods, {
    getLevel:function(jq,target){
        var l = $(target).parentsUntil("ul.tree","ul");
        return l.length+1;
    }
});

//用法

var node = $().tree("getSelected");
var lv =  $().tree("getLevel",node.target);