easyui_tree

• id: node id, which is important to load remote data
• text: node text to show
• state: node state, 'open' or 'closed', default is 'open'. When set to 'closed', the node have children nodes and will load them from remote site
• checked: Indicate whether the node is checked selected.
• attributes: custom attributes can be added to a node
• children: an array nodes defines some children nodes

state:closed--可能造成自动获取（无限获取），可改为state:open

对多张表数据以树的形式展现可以用attributes来区分来自那张表

$('#tr').tree({
　　url: "ashx/tree.ashx",

　　onClick: function (node) {

　　if (node.attributes == "国家") {
　　}

});

--1（表1，例：国家）

----11（表2，例：省/州）

----12

------121（表3，例：城市）

--2

----22

----23