countdown timer

I wonder if someone knows where i can get a countdown script for 24hours, or how one can be made? with active javascript

basiclly what i need is, when 24hours of the set time has run, it resets to 0 and begins to count down from 24hours again... like if i put it on 09:00PM it should start counting down from there and reset when it reach 09:00Pm again the next day and start over...

hope someone can help me.

 

Are you counting on having a page showing during the 24 hours?
You can always use setInterval, or setTimeout.

Imagine that you have a span element like this:

<span id="timer"></span>

Code (markup):

a quick scratch, counting only hours, can look something like this:

var timer = document.getElementById('timer');

function startTimer() {
    window.clearInterval(interval);

       var currTime = new Date().getTime();
        var finishTime = new Date(currTime + 24 * 3600 * 1000).getTime();

    var interval = window.setInterval(function() {
        currTime = new Date().getTime();
        var dif = (finishTime - currTime) / 1000;

        if (dif <= 0) {
            startTimer();
            return;
        }

        var hours = parseInt(dif / 3600);
        var minutes = parseInt((dif % 3600) / 60);
        var seconds = parseInt((dif % 3600) % 60);
        document.body.innerHTML = hours + ':' + minutes + ':' + seconds;
    }, 500);
}

window.onload = startTimer;

Code (markup):

 

good tut, thank you very much
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setTimeout:
Evaluates an expression after a specified number of milliseconds has elapsed
In versions earlier than Microsoft® Internet Explorer 5, the first argument of setTimeout must be a string. Evaluation of the string is deferred until the specified interval elapses.

As of Internet Explorer 5, the first argument of setTimeout can be a string or a function pointer.

The specified expression or function is evaluated once. For repeated evaluation, use the setInterval method.

When you use the setTimeout method with Introduction to DHTML Behaviors , the value of vCode should be a function pointer to call a function within the HTML Component (HTC) file or a string to call a function in the primary document.

setInterval Method
Evaluates an expression each time a specified number of milliseconds has elapsed.
The setInterval method continuously evaluates the specified expression until the timer is removed with the clearInterval method.

In versions earlier than Microsoft® Internet Explorer 5, the first argument of setInterval must be a string. Evaluation of the string is deferred until the specified interval elapses.

As of Internet Explorer 5, the first argument of setInterval can be passed as a string or as a function pointer.

To pass a function as a string, be sure to suffix the function name with parentheses. window. setInterval ("someFunction()", 5000);

When passing a function pointer, do not include the parentheses. window. setInterval (someFunction, 5000);