Ext combox从后台取值

js：

程序代码

var RecordDef = Ext.data.Record.create([
        {name: 'id'},{name: 'name'}              
    ]);
    var cityStore = new Ext.data.Store({
            proxy:new Ext.data.HttpProxy({url:'comboxdata.php'}),
            reader:new Ext.data.JsonReader({id:"id",totalProperty:"restults",root:"row"},RecordDef),
            listeners :{load : function(){}},
            remoteStore:true
     });
     cityStore.load();
     var combo = new Ext.form.ComboBox({
         store:cityStore,
        emptyText:'Select a name...',
        loadingText:'loading',
        selectOnFocus:true,
        displayField:'name',
        mode:'remote',
        triggerAction:'all',
        applyTo: 'local-states'
    });



后台返回：

程序代码


{'results':3,'row': [{'id':1,'name':'Peking'},{'id':2,'name':'shanghai'},{'id':3,'name':'shenyang'}]}