find parameter using javascript

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Hi friends...

i m tryng 2 find parameter in url, and if it found i want to replace the current URL with edited URL.but its not working.Can u please help me how to do this....

Here is my code

JavaScript

<html>
<head>
<script type="text/javascript">

function appendkeycode()
{
window.location.href="https://tools.aaa.com/gdrp/coiga/showsurvey.do?surveyCode=7189&keyCode=000038167&gId=#pf:CONTACT_ID#";
// Declare Variables
 var linkurl = 'https://secure.lomadee.com/at/actionlog';
 var linktext = '&adv=5742&country=AR&event=12583';
 var adminkeycode='000056432'

       var KeyCode_pattern= /^[0-9]{9}$/
       var pageurl = window.location.href;
	   var KeyCode="";
	     if(pageurl.indexOf("KeyCode=")!= -1)
            {
                 KeyCode=pageurl.substr(pageurl.indexOf("KeyCode=")+4);
                 var checkextraval = KeyCode.search("&");
                  if(checkextraval != -1)
                  KeyCode=Keycode.split("&")[0];
                  window.location.replace(linkurl + '?transaction=' + KeyCode + linktext );    
            }
	

}


</script>
</head>
<body>

<input type="button" id="btnClk" value="Register Now"  önClick=appendkeycode()>


</body>
</html>

Update:
I want to make it using html/css and javascript only. so please couls u plz tell me how can i proceed for this problem... i m repatng my questons.. suppose i click one button/link/images etc it will open https://tools.aaa.com/gdrp/coiga/showsurvey.do?surveyCode=7189&keyCode=000038167&gId=#pf:CONTACT_ID# now i want when the browser is processing to open the above link,some javascript function will call,which search for keycode in processing link, if it is found replace the proceesing link with( window.location.replace(linkurl + '?transaction=' + KeyCode + linktext );)...otherwise it will show the keycode value nd show the link with defult keycode value. means i want to change the innerhtml value in html...
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Posted 21-Sep-12 9:00am

rajdeep kumar

Updated 22-Sep-12 2:14am

Zoltán Zörgő

v4

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[no name] 21-Sep-12 15:04pm

"its not working" is not a very helpful decription of any kind of a problem. Does the code not run? Do you get the wrong index? Did your code format the hard drive? Did the code make your car explode?

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**Zoltán Zörgő** · Answer 1 · 2012-09-21T09:06:00

Solution 1

First of all, changing the location at the very beginning of the function will drop it's execution - in an undefined way. Won't work this way. You should reconsider the logic you want to implement.
Here is a JQuery plugin, you can use to parse and manipulate url strings: https://github.com/allmarkedup/jQuery-URL-Parser/blob/master/README.md[^]

Posted 21-Sep-12 9:06am

Zoltán Zörgő

Updated 21-Sep-12 9:11am

v3

Comments

rajdeep kumar 22-Sep-12 7:29am

Hi Zoltán Zörgő, thanks for your answer,
but the link u hv gvn for guide is using jquery, actually i want to make it using html/css and javascript only. so please couls u plz tell me how can i proceed for this problem...

i m repatng my questons..
suppose i click one button/link/images etc it will open https://tools.aaa.com/gdrp/coiga/showsurvey.do?surveyCode=7189&keyCode=000038167&gId=#pf:CONTACT_ID#
now i want when the browser is processing to open the above link,some javascript function will call,which search for keycode in processing link, if it is found replace the proceesing link with( window.location.replace(linkurl + '?transaction=' + KeyCode + linktext );)...otherwise it will show the keycode value nd show the link with defult keycode value. means i want to change the innerhtml value in html...

Zoltán Zörgő 22-Sep-12 8:13am

First of all, JQuery is Javascript. It is a Javascript library that's making your life easier. Where you use Javascript, you can use JQuery also.
And now about your logic: you want to intercept the location changes like a hook? Otherwise it makes no sense to me: why do you want to change the url on client side why aren't you generating the good one?