框架树数据源
SysTreeStore = function (config) { }; Ext.define('SysTreeStore', { extend: 'Ext.data.TreeStore', defaults: { storeId: 'MyTreeStore', extraParams: "", fields: ["id", "text", "leaf", "expanded"] }, constructor: function (config) { var me = this; Ext.apply(me, config || {}, me.defaults); me.callParent([Ext.apply({ proxy: new Ext.data.HttpProxy ( { type: 'ajax', url: cmdUrl, extraParams: config.extraParams } ) }, config)]); } });