代码如下:// 第一个下拉框 var parentStore = new Ext.data.Store({ proxy: new Ext.data.HttpProxy({ url: ‘loadByParentid.action?parentid=1001’ }), reader: new Ext.data.JsonReader({ root: ‘list’, id: ‘id’ }, [ {name: ‘id’, mapping: ‘id’}, {name: ‘mc’, mapping: ‘name’} ]) }); // 第二个下拉框 var childStore = new Ext.data
