ExtJS学习之判断开始时间是否早于结束时间

//开始时间选择框var StartDate = new Ext.form.DateField({name:'StartDate',id:"StartDate",format:'Y-m-d',xtype:'datefield',listeners:{select:function(dateField,date){var EDate=Ext.getCmp('EndDate').getValue();if(EDate!=""){var flag=date.between(date,EDate);if(!flag){Ext.Msg.alert("提示","开始时间不能大于结束时间！");StartDate.setValue("");}}}}});//结束时间选择框var EndDate = new Ext.form.DateField({name:'EndDate',id:'EndDate',format:'Y-m-d',xtype:'datefield',listeners:{select:function(dateField,date){var SDate = Ext.getCmp('StartDate').getValue();if(SDate!=""){var flag = date.between(SDate,date);if(!flag){Ext.Msg.alert("提示","结束时间不能小于开始时间！");EndDate.setValue("");}}}}});