通过json取树

tree.js

Ext.onReady(function(){

    //通过json取树
var root = new Ext.tree.AsyncTreeNode({
    id:'root',
    text:'树的根',
    href:'http://www.baidu.com' //根节点链接
});

var loader= new Ext.tree.TreeLoader({url:'treedata.js'}); //从js文件里取得json数据
var tree = new Ext.tree.TreePanel({
    renderTo:'tree-div',
    root:root,
    loader:loader,
    200
    
    
});

/*tree.on('click',function(node,event){ //节点响应事件
alert(node.text);
});*/

//tree.render();
});

treedata.js

[{
	id:'1',
	text:'子节点1',
	leaf:true
},
{
	id:'2',
	text:'子节点2',
	children:[{
		id:'3',
		text:'孙子节点',
		leaf:'true'
	}
	]
}
]