Question

Ext4.1的树treepanel怎么从数据库中读取数据 根节点是写死的

Answer 1

你只有返回的json数据格式对就可以了，下面有个例子自己看看吧
var store = Ext.create('Ext.data.TreeStore', {
root: {
expanded: true,
children: [
{ text: "detention", leaf: true },
{ text: "homework", expanded: true, children: [
{ text: "book report", leaf: true },
{ text: "alegrbra", leaf: true}
] },
{ text: "buy lottery tickets", leaf: true }
]
}
});

Ext.create('Ext.tree.Panel', {
title: 'Simple Tree',
width: 200,
height: 150,
store: store,
rootVisible: false,
renderTo: Ext.getBody()
});

Answer 2

loader: new Ext.tree.TreeLoader(“数据”),