学习和应用extjs Developing with Extjs - tricks and tips. (4)

来源http://www.akbkhome.com/blog.php/View/137/Developing_with_Extjs__tricks_and_tips.html
更有效的组合框
function myCombo() {
this.Store =  new Ext.data.Store({
            proxy: new Ext.data.HttpProxy({
                   url: baseURL + '/MyLister.js'
                    }),
            reader: new Ext.data.JsonReader({
                root: 'data',
                totalProperty: 'totalCount',
                id: 'id'
            }, [ 'id', 'fullname' ])        });
        }
    this.Store.load();
    config.store =  this.Store;
    myCombo.superclass.constructor.call(this, config);
}
Ext.extend(FlexyCash.AccountCombo, Ext.form.ComboBox, {
    mode: 'local',    .....});
这里是用json访问远程数据，其改进的关键点在于mode设置成：'local'，如此一来，只要激活
combo.store.load() 方法就能刷新数据了