请问怎么解决form.form.submit({
 url:'action/addNewsAction.php',
 method:"post",
waitMsg:'loading...',
 success:function(forms,action){
  //var json = Ext.decode(response.responseText);
  Ext.Msg.alert('提交成功','数据已提交!'+action.result.msg);
form.reset();
 },
 failure:function(forms,action){
Ext.Msg.alert('错误提示',action.failureType);
 }
 });