提示:id为空或不是对象

                        tools:[
                                {id:"save"},
                                {id:"help", handler:function(){Ext.Msg.alert("help","please help me");}},
                                {id:"close"}
                              ]

 

 

可能的原因:在最 后一个元素后加了逗号,

如果在{id:"close"}后加上了逗号, 那么将会产生错误 :id 为空,或不是对象.