Library code snippets

Browser Detect

Here's a quick script that will give you the browser name and version.

 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);
 }
 document.writeln('<b>Browser Name: </b>' + bName + '<br>');
 document.writeln('<b>Browser Version: </b>' + bVer + '<br>')

Comments

  1. 12 Aug 2005 at 03:26

    Well, if a browser with IE core, we cann't make out which brower it is. That is, we open a page with IExplorer or with some third-party web browser such as Crazy Browser or Maxthon Browser,  all the information detected by navigator properties is the same.
    In this case, how can we get the proper browser information? I just want to know the browser name and my purpose is to restrict my web application only to run in Microsoft Internet Explorer.
    Thanks a lot.

  2. 01 Jan 1999 at 00:00

    This thread is for discussions of Browser Detect.

Leave a comment

Sign in or Join us (it's free).

 nzjonboy

Related podcasts

  • jQuery in ASP.NET

    In this episode Chris Brandsma, Rick Strahl, Dave Ward, Bertrand Le Roy, Scott Koon, and Steven Harman discuss Microsoft's jQuery in ASP.NET announcement.This episode of the Alt.NET Podcast is brought to you by LLBLGen Pro, the most mature O/R mapper and code generator out there.Are you loo...

Events coming up

  • Dec 8

    December Silicon Valley Ruby Meetup

    Moffett Field, United States

    In a World of Middleware, Who Needs Monolithic Applications? by Jon Crosby With Rack emerging as the standard for composing web applications and services, most recently with Rails adoption, an architectural shift is taking place. Learn how to create next generation web services by reusing existing Rack middleware and supplementing with your own components and micro-frameworks like Sinatra. Bio : Jon likes music, the Open Web, Ruby, Erlang, Haskell, Objective-C, JavaScript and coffee.

We'd love to hear what you think! Submit ideas or give us feedback