我的页面有问题。当它打开时,它显示以下错误消息:
Microsoft JScript 运行时错误:“Sys.Extended.UI”为空或不是对象
<ajax:ToolkitScriptManager ID="tsm" runat="server" CombineScripts="false" >
</ajax:ToolkitScriptManager>
并显示错误
$create(Sys.Extended.UI.ModalPopupBehavior, {"BackgroundCssClass":"modalBackground1","DropShadow":true,"PopupControlID":"ctl00_ContentPlaceHolder1_panelPopupAddDefaultAddress","PopupDragHandleControlID":"ctl00_ContentPlaceHolder1_panelPopupAddDefaultAddressDragHandle","dynamicServicePath":"/SJM.Framework.Website/Order/ActiveOrders.aspx","id":"ctl00_ContentPlaceHolder1_modalPopupAddDefaultAddress"}, null, null, $get("ctl00_ContentPlaceHolder1_hiddenTargetControlForModalPopup"));
谁能告诉我是什么问题。我试过了,但我还没有找到。