When you change your website’s URL or move a file to a new location you will need JavaScript to redirect visitor to your new url or new file location.

<script type=”text/javascript”>
window.location = “http://www.newsite.com/”
</script>

By setting window.location to a new URL, you will in turn change the current webpage to the one that is specified.

Of course, the page will only redirect if the user has JavaScript enabled on their browser. Otherwise, try using an HTML redirect.

JavaScript has a method of the window object setTimeout(). These method allows you to specify that a piece of JavaScript code (called an expression) will be run a specified number of milliseconds from when the setTimeout() method was called.

<form name=”form1″>
<input type=”text” name=”milliseconds”> seconds<br/>
<input type=”button” value=”Start” onClick=”setTimeout(‘alert(\’Times up\’)', document.form1.milliseconds.value*1000);”>
</form>

Using setTimeout to trigger an alert after a specified number of milliseconds can make the script working like a countdown timer. You can make the script for user to be able to enter a time (in number of seconds), and at when that time is reached, to trigger an alert.

So when the script is launched, it should prompt the user to enter a time(number of seconds), and then start counting down that time. When that time is reached, display an alert to the user.

The code below could make Javascript to wait for a little bit here (2 seconds) and then carry on as before to the next event. It could be used to set up an event to happen later or to delay an event.

<script language=”javascript”>

var miliSecondsToWait = 2000;
var date = new Date();
var curDate = new Date();

do { curDate = new Date(); }
while(curDate-date < miliSecondsToWait);
}

</script>

That’s a good way to handle delays, pauses and waiting in Javascript.