countdown timer

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Hello everyone,
I m doing online exam project. I want to show countdown timer and calculate time for which I have written following code but it doesn't work. Please help me.
Thanks in advance.

In the form tags:

XML

<input type="hidden" id="timeAllocated" name="timeAllocated" value="30" runat="server" />

then set the timeAlloted control in Page_Load:

C#

if ( !IsPostBack )
        timeAllocated.Value = value-from-database.ToString();

Javascript:

JavaScript

<script language="JavaScript">
<!--
function window::onload()
{
 var timeAlloted = 30;
 if ( document.getElementById('timeAllocated').value.length > 0 )
  timeAlloted = parseFloat(document.getElementById('timeAllocated').value);
 else
  document.getElementById('timeAllocated').value = timeAlloted;
 document.getElementById('timerDisplaySpan').innerHTML =
  '<b>Time Remaining: ' + timeAlloted + " Minutes.</b>";

 // 1000 = 1 second...
 window.setInterval('decrementTimer()', 60000);
}
function decrementTimer()
{
 var timeAlloted = parseFloat(document.getElementById('timeAllocated').value);
 timeAllote-;
 document.getElementById('timeAllocated').value = timeAlloted;
 document.getElementById('timerDisplaySpan').innerHTML =
  '<b>Time Remaining: ' + timeAlloted + " Minutes.</b>";
}
// -->;
</script>

Posted 26-Jul-10 18:51pm

aparnaChandras

Updated 26-Jul-10 19:07pm

Ankur^\m/

v2

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Ankur^\m/ 27-Jul-10 1:10am

Is it "timeAllote-;" or a typo.
It should be "timeAlloted--;"

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Sandeep Mewara · Answer 1 · 2010-07-26T20:02:00

Solution 1

1. "timeAllote-;" would be " timeAllote--;"
2. Where/When do you call decrementTimer?

Lastly, what didn't work. Any error?

Posted 26-Jul-10 20:02pm

Sandeep Mewara

Comments

aparnaChandras 27-Jul-10 2:14am

It doesn't show time

Sandeep Mewara 27-Jul-10 2:27am

When did you set the visibility of 'timerDisplaySpan'? I mean is it always visible in your html? Further, why do you want to change the full InnerHTMl when changing just the time label would do for you?