12-LearningAboutEnvironment/DetectingBrowser/index.html

<html>

  <head>
    <meta http-equiv="content-type" content="text/html;chars-
       et=iso-8859-1">
    <title>DHTML for the WWW | Detecting the Browser Name an-
       d Version</title>
  </head>
  <body>
<script>
document.write('<b>This browser\'s designation is:</b> ');
document.write(navigator.appName + ' ');
document.write(navigator.appVersion);

var isNS = 0;
var isIE = 0;
var isOtherBrower = 0;

if (navigator.appName.indexOf('Netscape') != -1) {isNS = 1;}
else { 
if (navigator.appName.indexOf('Microsoft Internet Explorer')-
    != -1) {isIE = 1;}
else {isOtherBrow = 1;}
}

browserVersion = parseInt(navigator.appVersion);
  
document.write('<br><br>');
if (isNS) {document.write('This Browser is compatible with N-
   etscape version ');}
else { 
if (isIE) {document.write('This Browser is compatible with I-
   nternet Explorer version ');}
else {
if (isOtherBrowser) {document.write('I do not recognize this-
    browser type. Version = ');}
}}
document.write(browserVersion +'.');
</script>
  </body>

</html>