JavaScript Forum

**dansgalaxy** · 06-24-2007, 01:37 PM

hi,

im using this script i foundto detect the Broswer.

(You can see it in action. here http://dansgalaxy.co.uk/ipme)

it seems to work fine in IE and opera but in firefox its showing Netscape.
i only know basic javascript commands so i have no clue on how to do this.

could someone help?

heres the code which is in the <head> tags.

Code:

<script language="JavaScript" type="text/javascript">
<!-- Original:  Gregor (legreg@legreg.de) -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
var useragent = navigator.userAgent;
var bName = (useragent.indexOf('Opera') > -1) ? 'Opera' : navigator.appName;
var pos = useragent.indexOf('MSIE');
if (pos > -1) {
bVer = useragent.substring(pos + 5);
var pos = bVer.indexOf(';');
var bVer = bVer.substring(0,pos);
}
var pos = useragent.indexOf('Opera');
if (pos > -1) {
bVer = useragent.substring(pos + 6);
var pos = bVer.indexOf(' ');
var bVer = bVer.substring(0, pos);
}
if (bName == "Netscape") {
var bVer = useragent.substring(8);
var pos = bVer.indexOf(' ');
var bVer = bVer.substring(0, pos);
}
if (bName == "Netscape" && parseInt(navigator.appVersion) >= 5) {
var pos = useragent.lastIndexOf('/');
var bVer = useragent.substring(pos + 1);
}
//  End -->
</script>

and here is what is used to insert it into the page

Code:

  <tr> 
    <td>Browser Name</td>
    <td><script language="JavaScript" type="text/javascript">document.writeln('' + bName + '');</script></td>
  </tr>
  <tr> 
    <td>Browser version</td>
    <td> <script language="JavaScript" type="text/javascript">
 document.writeln('' + bVer + '');
 </script> </td>
  </tr>

i would be really greatful if someoen could show me how it can also deect ff.

Thanks,
Dan

**frost** · 06-24-2007, 02:29 PM

Quote:

Originally Posted by dansgalaxy

Code:

<script language="JavaScript" type="text/javascript">
<!-- Original:  Gregor (legreg@legreg.de) -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
var useragent = navigator.userAgent;
var bName = (useragent.indexOf('Opera') > -1) ? 'Opera' : navigator.appName;
var pos = useragent.indexOf('MSIE');
if (pos > -1) {
bVer = useragent.substring(pos + 5);
var pos = bVer.indexOf(';');
var bVer = bVer.substring(0,pos);
}
var pos = useragent.indexOf('Opera');
if (pos > -1) {
bVer = useragent.substring(pos + 6);
var pos = bVer.indexOf(' ');
var bVer = bVer.substring(0, pos);
}
if (bName == "Netscape") {
var bVer = useragent.substring(8);
var pos = bVer.indexOf(' ');
var bVer = bVer.substring(0, pos);
}
if (bName == "Netscape" && parseInt(navigator.appVersion) >= 5) {
var pos = useragent.lastIndexOf('/');
var bVer = useragent.substring(pos + 1);
}
//  End -->
</script>

Add this to the bottom of your script, just above the // End -->

Code:

var pos = useragent.indexOf('Firefox');
if (pos > -1) {
bName = 'Firefox';
bVer = useragent.substring(pos + 6);
var pos = useragent.lastIndexOf('/');
var bVer = useragent.substring(pos + 1);
}

**dansgalaxy** · 03:41 PM

Thanks frost!

Working fine! only noticed coz friend who uses Firefox (this was before i tested in FF) was like it says netscape thats [four letter word] Lol

nice one. i sent u some nice rep

Dan

**tripy** · 06-24-2007, 04:12 PM

Well, you know, historicly speaking, firefox is based on the code of netscape 4, which was put in open source by netscape to create netscape 5.

So, saying that FF is seen as netscape is not that wrong...
Ok, I know, shutting up now..

**dansgalaxy** · 06-24-2007, 04:26 PM

Knowlegable.

but to be honest i dont think so i just think it showed netscape when it couldnt identify it...

but now it does.. all thanks to Frost!

i just need a good free script which can show the town/city were they are...
anyone?...

**willcode4beer** · 06-25-2007, 09:25 AM

My response to the original topic. One of the current recommendations is to use feature detection instead of browser detection. Many browsers allow for spoofing the user agent.

This is usually done by those using something other than IE on a non-windows OS. Many banking sites won't let them in unless they spoof and say its internet explorer, even though everything works just fine.

The problem is, javascript can break if Opera/Konquerr/whatever, identifies as IE and receives IE only javascript.

The other problem is, as new browsers/versions are released, detection scripts need constant updating.

By using feature detection, you can try standard DOM access first, and then attempt to downgrade to vendor specific code as needed.

As for locating a user, try geo lookup/locator. You should be able to find code for just about every server.
http://www.google.com/search?q=geo+locator
http://www.google.com/search?q=geo+lookup