ASP.NET

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"><br />
  <script type="text/javascript" src="js/timer.js"></script><br />
<script type="text/javascript"><br />
    window.onload = WindowLoad;<br />
    function WindowLoad(event) {<br />
<br />
        ActivateCountDown("CountDownPanel1", document.getElementById('lbltime').value, "CountDownEnded1");<br />
       <br />
    }<br />
<br />
    function CountDownEnded1() {<br />
        alert("Time End");<br />
        location.reload(true);<br />
    }<br />
<br />
</script><br />
 <asp:Label ID="lbltime" runat="server" Visible="false"></asp:Label>

<br />
<asp:Label ID="lbltime" runat="server" Visible="false" Text="sometext"></asp:Label><br />

El_Programmer wrote:

if you are assigning a value (Text) from the server side, you must do it before the form call for the javascritp code, in Page_Prerender event.

var value = $("id[$='lbltime']").val();

Member 7765904 wrote:

the problem is document.getElementById("lbltime").value not work with masterpage

<script type="text/javascript">
var slbltime = '<%=lbltime.ClientID%>'

window.onload = WindowLoad;
function WindowLoad(event) {

ActivateCountDown("CountDownPanel1", document.getElementById(slbltime).value, "CountDownEnded1");

}
</script>

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