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.

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