Get page URL

spyderco · Dec 7, 2005

Sorry if this is a basic question, I don't know JS to any degree.

I have a CGI script located as an SSI include on my web site. Since HTML is stateless, I can't accurately display where current users are visiting (this is a users online script). The best I can do is check the HTTP_REFERER and check the LAST page they were on.

Is there any short and basic JavaScript code that can report back what the current URL is and have it pass that data to a CGI script?

cLFlaVA · Dec 7, 2005

one of the ways to access the current url of a page using javascipt is the window.location variable.

Code:

alert( window.location );

*cLFlaVA
----------------------------
[tt]I already made like infinity of those at scout camp...[/tt]
[URL unfurl="true"]http://www.coryarthus.com/[/url]
[banghead]

spyderco · Dec 7, 2005

Hi.

Thank you for that.

Now I am lost as to how to pass that string over to a server side script. Can you or anyone else give me a little push here?

Thank you!

JSProgramIA · Dec 7, 2005

Hi,

Found this in my js library. This should do the trick.

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL unfurl="true"]http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">[/URL]
<html xmlns="[URL unfurl="true"]http://www.w3.org/1999/xhtml">[/URL]
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Tek-Tip Help</title>
<script>
function getQueryVariable(variable) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  } 
  alert('Query Variable ' + variable + ' not found');
}
</script>

</head>

<body> 
<script>
  alert( getQueryVariable("x") );
</script>
</body>
</html>

and you would access the page like this, of course:

Code:

[URL unfurl="true"]http://localhost/test.html?j=dummy&x=75[/URL]

In this case, I am looking to retrieve the x variable. It will display its value in an alert, but you can do whatever you want with it.

Lastly, if you can, I would suggest writing your own "whos online" script in the back end language of your choice. It's an easy code, and great practice.

Regards

BillyRayPreachersSon · Dec 8, 2005

Without checking the referrer, the best way of passing the current URL to a server-side script would probably be to place the URL in a form field, and submit the form.

You could do it in other ways without a form submission, such as putting it as a parameter after a URL that you retrieve (such as an image or script URL).

Hope this helps,
Dan

[tt]Dan's Page [blue]@[/blue] Code Couch

http://www.codecouch.com/dan/

[/tt]

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Get page URL

spyderco

Programmer

cLFlaVA

Programmer

spyderco

Programmer

JSProgramIA

Programmer

BillyRayPreachersSon

Programmer

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