在asp.net UpdatePanel 执行脚本JS

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server"><ContentTemplate >

</ContentTemplate></asp:UpdatePanel>

 

<script type="text/javascript">

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(blah);

Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(blah2);

function blah() {

    alert("结束时执行");    

}

function blah2() {

    alert("开始时执行");        

}

</script>