摘要：
1、报错：this.onMetaChange is undefinedhttp://localhost:8080/ExtStudy/extjs/ext-all.jsLine 10451原因：var ds = Ext.data.Store({proxy:new Ext.data.ScriptTagProxy({url:'http://extjs.com/forum/topics-remote.php'}),reader:new Ext.data.JsonReader({root:'topics', totalProperty:'totalCount' 阅读全文