Extjs 完整树 但是有个bug 也许节点很多会出bug 有待调试
js 文件


/*!
* Ext JS Library 3.0.0
* Copyright(c) 2006-2009 Ext JS, LLC
* licensing@extjs.com
* http://www.extjs.com/license
*/

Ext.onReady(function(){
    var tree = new Ext.tree.TreePanel({
        renderTo:'tree-div',
        title: 'My Task List',
        height: 450,
        width: 600,
        useArrows:true,
        autoScroll:true,
        animate:true,
        enableDD:true,
        containerScroll: true,
        rootVisible: false,
        frame: true,
        root: {
            nodeType: 'async'
        },
       
        dataUrl: 'check-nodes.json',
       
        buttons: [{
            text: 'Get Completed Tasks',
            handler: function(){
                var msg = '', selNodes = tree.getChecked(); // getNode  select return array
                Ext.each(selNodes, function(node){
                    if(msg.length > 0){
                        msg += ', ';
                    }
                    msg += node.text;
                });
                Ext.Msg.show({
                    title: 'Completed Tasks',
                    msg: msg.length > 0 ? msg : 'None',
                    icon: Ext.Msg.INFO,
                    minWidth: 200,
                    buttons: Ext.Msg.OK
                });
            }
        }]
    });
   
    /*  
     * tree.suspendEvents()  方法说明：暂停触发所有的事件
     *  tree.resumeEvents()   方法说明：重新触发事件
     */
   
 &nbs