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how can make a script to not execute on a certain page?

Sorry for the title ,it is indeed confusing.
I have some javascript code that works in every browser except IE 7 and 8 (it throws errors). So as a work around I would like the code not to run on certaing pages of all browsers where its redundant.
I would like the solution to be in javascript because I only want to disable in some pages instead of apply the rule to all.

I think for example this function can help you to skip the javascripts on javascript side:
http://msdn.microsoft.com/en-us/library/ms537509%28v=vs.85%29.aspx
Or you can do this on php side also:
PHP: If internet explorer 6, 7, 8 , or 9

You can use IE conditional statements in the head tag to include JS only when the browser is IE of a specific version:
<!--[if lt IE 8]>
<script src="myscript.js" type="text/javascript"></script>
<![endif]-->
The code is wrapped in a comment statement on purpose!
http://msdn.microsoft.com/en-us/library/ms537512(VS.85).aspx

<![if !IE]>
<script src="script.js"></script>
<![endif]>

I really don't understand you question well. But if you want disable the script of IE
You can try this(for example):
For disabline script for IE -
<!--[if !IE]><!-->
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
// your inline script goes here
</script>
<!--<![endif]-->
Read this 1
For disabling script for IE 8 -
<!--[if !(IE 8)]><!-->
<script src="path/to/external/script"></script>
<script>
// your inline script goes here
</script>
<!--<![endif]-->
and
<!--[if !(gte IE 8)]><!-->
<script src="path/to/external/script"></script>
<script>
// your inline script goes here
</script>
<!--<![endif]-->
Read this 2
Removing a Script block :
set a id to your script,
<script id="sample">
...
</script>
and use this code,
$("#sample").remove();

I guess what you're looking for is document.location in combination with a browser detectio. But be aware that most browsers can fake the instances. If you're using jQuery I'd suggest you use the $.support property instead of trying to get the user agent.
http://api.jquery.com/jQuery.support/
Greetings
Niveaulos

JavaScript / HTML - new Audio JavaScript fails in IE 8 and less?

How can I fix this? eg:
snd = new Audio("foo/bar.wav")
alert("abc") //in IE this line wont run??!
snd.play()

If you detect the feauture (the supported type),
your script will not throw an error in other browsers (mobile etc.),
that doesn't support audio.
You could make it crossbrowser conditional ie.
if (typeof window.Audio != 'undefined') {
/* var snd = new Audio("foo/bar.wav"); ... */
}
or consider to use Modernizr.

IE8- does not support the <audio> element. See http://caniuse.com/#feat=audio. If you can separate your script, you can do this:
<!--[if lte IE 8]>
<script>
alert("Old IE.");
</script>
<![endif]-->
<!--[if IE 9]>
<script>
snd = new Audio("foo/bar.wav");
alert("IE9");
snd.play()
</script>
<![endif]-->
<!--[if !IE]> -->
<script>
snd = new Audio("foo/bar.wav");
alert("Not IE (Or IE10+)");
snd.play()
</script>
<!-- <![endif]-->
IE10 drops conditional comments altogether, so it will use the !IE script.

sniffing IE8 only

What's the shortest javascript code to sniff if the browser is IE8.
I want to do something special just for IE8
I don't want to wire up a library that gives me back all the browsers and the versions.
I just want to write one or two lines to work out if it's IE8.
thanks
zo

The best way I found is to use conditional styles, or conditional compiling:
var isIE8 = false;
<!--[if IE 8]>
<script type='text/javascript'>
isIE8 = true;
</script>
<![endif]-->
Then in your code, you can simply check this value:
<script type='text/javascript'>
if (isIE8) {
alert('Your browser is IE8');
}
</script>

You can do this in HTML, by using this:
<!--[if IE 8]>
<script type="text/javascript" src="IE8.js">
<![endif]-->
Also take a look at this tutorial: http://msdn.microsoft.com/en-us/library/ms537509%28v=vs.85%29.aspx

In your HTML, you can include markup for certain IE browsers using conditional comments:
<!--[if IE 8]>
<script type="text/javascript" src="ie8_hacks.js">
<![endif]-->

How to Redirect all IE users to a new page

My programmer is on vacation so I need your help! I discovered a page that has a bug for IE users. I want to redirect all IE users to a different page.
How can I do this? I searched all through Google and Stackoverflow and cannot find an answer. (I found some scripts, and tried them, but none worked).

Try:
<!--[if IE]>
<script type="text/javascript">
window.location = "http://www.google.com/";
</script>
<![endif]-->

Or, a non-JS solution, put the following in your head section:
<!--[if IE]>
<meta HTTP-EQUIV="REFRESH" content="0; url=http://www.google.com">
<![endif]-->

A reminder that the [if IE] solution does not apply to IE 10 or greater. This can be very annoying for "features" that have not been fixed by IE 10. I am going to try the php and java solutions and re-comment.

I put this in header and it works for all IE versions:
<!-- For IE <= 9 -->
<!--[if IE]>
<script type="text/javascript">
window.location = "https://google.com";
</script>
<![endif]-->
<!-- For IE > 9 -->
<script type="text/javascript">
if (window.navigator.msPointerEnabled) {
window.location = "https://google.com";
}
</script>

For Internet Explorer 10 this one works well
<script type="text/javascript">
if (navigator.appName == 'Microsoft Internet Explorer')
{
self.location = "http://www.itmaestro.in"
}
</script>

Server-side solution using PHP that's guaranteed to work on all browsers:
<?
if ( preg_match("/MSIE/",$_SERVER['HTTP_USER_AGENT']) )
header("Location: indexIE.html");
else
header("Location: indexNonIE.html");
exit;
?>

Support for conditional comments has been removed in Internet Explorer 10 standards
I'm use this dirty hack for redirecting IE10+ users
<script type="text/javascript">
var check = true;
</script>
<!--[if lte IE 9]>
<script type="text/javascript">
var check = false;
</script>
<![endif]-->
<script type="text/javascript">
if (check) {
window.location = "page_for_ie10+.html";
}
</script>

js code:
<script>if (/*#cc_on!#*/false || (!!window.MSInputMethodContext && !!document.documentMode)){window.location.href="https://....html";}</script>
You can also use this Boycott-IE:upgrade-your-browser

Is there a way to introduce Internet Explorer conditional comments using JavaScript?

I have a segment of HTML code which includes a conditional comment:
<!--[if IE]>
<link rel="stylesheet" ...>
<[endif]-->
This code was tested and works correctly when included in the HEAD section of the page, on the initial page rendering.
I would like to introduce the same conditional CSS to an existing page using JavaScript in an Ajax response.
I have tried:
var comment = document.createComment("[if IE]>\n<link rel=\"stylesheet\" ...>\n<[endif]");
Wicket.Head.addElement(comment); //this is framework code that just appends the element to the HEAD node of the page. I debugged and verified that it's doing the appendChild(...) call.
The above code does not cause the stylesheet to be applied in Internet Explorer 7. Is there a way, using JavaScript, to introduce the conditional style in a way that Internet Explorer understands?
Just to be clear, I am trying to use JavaScript to create a conditional style, not trying to write browser-conditional JavaScript.

You can use conditional comments inside innerHTML as follows:
var div = document.createElement("div");
div.innerHTML = "<!--[if IE]><i></i><![endif]-->";
if (div.getElementsByTagName("i").length) {
var link = document.createElement("link");
link.rel = "stylesheet";
link.type = "text/css";
link.href = "ie_only.css";
document.getElementsByTagName("head")[0].appendChild(link);
}

Very simple:
/*#cc_on document.createStyleSheet("ie.css"); #*/

Do you know Modernizr?
Also, it is great to use this in the HTML open tag (replace the no-js with js!)
<!--[if lt IE 7 ]><html lang=en-us class="no-js ie6"><![endif]-->
<!--[if IE 7 ]><html lang=en-us class="no-js ie7"><![endif]-->
<!--[if IE 8 ]><html lang=en-us class="no-js ie8"><![endif]-->
<!--[if (gte IE 9)|!(IE)]><!--> <html lang=en-us class=no-js> <!--<![endif]-->
So you can do this in CSS:
.ie7 .myDiv {
foo:bar;
}
Can also be accessed in javascript with:
if( document.body.className.indexOf("ie") > -1 ){
//
}
// or using jQuery
if( $(document.body).hasClass("ie6") ){
}

All this is unnecessary.
public void renderHead(IHeaderResponse response)
if (WebSession.get().getClientInfo().getClientProperties().isBrowserInternetExplorer()) {
response.renderJavaScriptReference(new JavaScriptResourceReference(MyClass.class, "ie.js"));
}
If you choose to use Modernizr be aware of https://issues.apache.org/jira/browse/WICKET-3433