Re: HOWTO Q: detect browser's script enabled? - II
| From: | Arve Bersvendsen | Date: | Tue, 29 Jan 2002 20:25:12 +0000 |
| Subject: | Re: HOWTO Q: detect browser's script enabled? - II | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-82605@lists.php.net to get a copy of this message | ||
Ivo Stoykov wrote in news:20020129185128.39173.qmail@pb1.pair.com:
> Hello again
>
> earlier today I asked about detecting whether javascript is
> enabled on the visitor's browser (bellow are the question and
> answeres received).
<html>
<head>
</head>
<body>
<script type="text/javascript">
jsImg = new Image()
jsImg.src = "js-yes.gif";
</script>
<noscript>
<img src="js-no.gif" width="0" height="0" alt="" />
</noscript>
</body>
</html>
Your access logs for the images js-yes.gif, and js-no.gif will give
you stats over js/no-js.
If you need something more sophisticated, you can replace js-yes.gif
and js-no.gif with serverside scripts that add the results to a
database.
I have a sample php-script that gives you some of that functionality
without resorting to database:
[jsenabled.php]
<?php
if ($js_=="y"){
$file = "ay.txt";
} else if ($js=="n"){
$file = "an.txt";
}
$fp = fopen($file,"a");
fwrite($fp,"1");
fclose($fp);
header("Content-type: image/gif");
readfile("spacer.gif");
?>
I then modify the html/js code to look like this:
[somedocument.html]
<html>
<head>
</head>
<body>
<script type="text/javascript">
jsImg = new Image()
jsImg.src = "jsenabled.php?js=y";
</script>
<noscript>
<img src="jsenabled.php?js=n" width="0" height="0" alt=""
/>
</noscript>
</body>
</html>
Please note that you'd want to purge the an.txt and ay.txt every once
in a while.
--
Arve <URL:http://www.bersvendsen.com/>
Newsere mot X-No-Archive
<URL:http://www.ibiblio.org/Dave/Dr-Fun/df9601/df960124.jpg>
