extjs4.0 树 复选框

Question

extjs4.0 树复选框，如图http://blog.csdn.net/weil001/article/details/4008016 网址的维度成员选择效果过，后台的数据json不能有checked：true或false

Answer 1

你是想问怎么添加checkbox还是想问别的什么？

Answer 2

Ext.require(['*']);
Ext.onReady(function(){  
var data = [
{
"text": "To Do", 
"cls": "folder",
"expanded": true,
"children": [{
"text": "Go jogging",
"leaf": true
},{
"text": "Take a nap",
"leaf": true
},{
"text": "Climb Everest",
"leaf": false,
"children":[{"text":"Go Shopping","leaf":true}]
}]
},{
"text":"Go Hiking",
"cls":"folder",
"leaf":true
}]
    var store2 = Ext.create('Ext.data.TreeStore', {
        root: {
            text: 'Custom Ext JS',
            id: 'src',
            expanded: true,
            children: data
        },
        folderSort: true,
        sorters: [{
            property: 'text',
            direction: 'ASC'
        }]
    });
function iterNodes(rootnodes){
for(var i=0;i<rootnodes.length;i++){
rootnodes[i].data.checked=false            //设置checkebox
if(rootnodes[i].childNodes.length>0){
iterNodes(rootnodes[i].childNodes) //如果有子节点就递归。
}
}
}
    var tree2 = Ext.create('Ext.tree.Panel', {
        id: 'tree2',
        width: 250,
        height: 300,
        store: store2,
        viewConfig: {
            plugins: {
                ptype: 'treeviewdragdrop',
                appendOnly: true
            }
        },
        renderTo: document.body,
listeners:{
render:function(t){
var tree = t.store;
var rootnodes = tree.getRootNode().childNodes;//获取主节点
iterNodes(rootnodes);
}
}
    });
});