Generating clientside javascript

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Generating clientside javascript

 
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  #1
Mar 29th, 2007
I'm currently working on my online quiz application. It is based on ASP.
I want to add the countdown timer in every quiz that run.
But the problem is the javascript will go freeze in my ASP, it only run each time i refreshed the page.
Some suggest me to use the clientside javascript to get the time running.
Anybody can help me with this?
Your help is very much to me. Thanks.
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Re: Generating clientside javascript

 
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  #2
Mar 29th, 2007
Try here

http://www.javascript-page.com/timer.html

God I love Google
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Re: Generating clientside javascript

 
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  #3
Mar 29th, 2007
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Originally Posted by davidcairns View Post
Try here

http://www.javascript-page.com/timer.html

God I love Google
Okay now i can see it.
Well how can set up the limitation time.
I wrote the code :
If document.theTimer.theTime.value = "01:00" {
Stop();
}
But the clock dont even run.
Im new in Java, so any help will be great. Thanks.
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Re: Generating clientside javascript

 
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  #4
Mar 29th, 2007
Make sure you have these options in the html body tag

<body onload="Reset()" onunload="Stop()">

Regards

D
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Re: Generating clientside javascript

 
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  #5
Mar 29th, 2007
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Originally Posted by davidcairns View Post
Make sure you have these options in the html body tag

<body onload="Reset()" onunload="Stop()">

Regards

D
OKAY here is the code :
I think i miss-place the limitation code.

The limitation code is :
If document.theTimer.theTime.value = "01:00" {
Stop();
}

Where should i place the code?

<script language="JavaScript">

<!--
// please keep these lines on when you copy the source
// made by: Nicolas - http://www.javascript-page.com

var timerID = 0;
var tStart = null;

function UpdateTimer() {
if(timerID) {
clearTimeout(timerID);
clockID = 0;
}

if(!tStart)
tStart = new Date();

var tDate = new Date();
var tDiff = tDate.getTime() - tStart.getTime();

tDate.setTime(tDiff);

document.theTimer.theTime.value = ""
+ tDate.getMinutes() + ":"
+ tDate.getSeconds();

timerID = setTimeout("UpdateTimer()", 1000);

If document.theTimer.theTime.value = "01:00" {
Stop();
}

}

function Start() {
tStart = new Date();

document.theTimer.theTime.value = "00:00";

timerID = setTimeout("UpdateTimer()", 1000);
}

function Stop() {
if(timerID) {
clearTimeout(timerID);
timerID = 0;
}

tStart = null;
}

function Reset() {
tStart = null;

document.theTimer.theTime.value = "00:00";
}

//-->

</script>
<body onload="Reset()" onunload="Stop()">
<center><form name="theTimer"><table>
<tr>
<td colspan=3 align=center>
<input type=text name="theTime" size=5>
</td>
</tr>
<tr><td></td></tr>
<tr>
<td>
<input type=button name="start" value="Start" onclick="Start()">
</td>
<td>
<input type=button name="stop" value="Stop" onclick="Stop()">
</td>
<td>
<input type=button name="reset" value="Reset" onclick="Reset()">
</td>
</tr>
</table></form></center>

Oh ya, im working on the resume function so the time will not be reset when the page is being refreshed.
Any helps of this will once again a big thank you from me.
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Re: Generating clientside javascript

 
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  #6
Mar 29th, 2007
It would need to go inside the update function as you say. Also JS timers aren't perfect, so use >= instead of = as follows

If tDate.getMinutes() >= 1 {
Stop();
}

Regards

D
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