JavaScript 浏览器检测

JavaScript 浏览器检测

<html>

   <head>
      <title>Browser Detection Example</title>
   </head>

   <body>

      <script type = "text/javascript">
         <!--
            var userAgent   = navigator.userAgent;
            var opera       = (userAgent.indexOf('Opera') != -1);
            var ie          = (userAgent.indexOf('MSIE') != -1);
            var gecko       = (userAgent.indexOf('Gecko') != -1);
            var netscape    = (userAgent.indexOf('Mozilla') != -1);
            var version     = navigator.appVersion;

            if (opera) {
               document.write("Opera based browser");
               // Keep your opera specific URL here.
            }

            else if (gecko) {
               document.write("Mozilla based browser");
               // Keep your gecko specific URL here.
            }

            else if (ie) {
               document.write("IE based browser");
               // Keep your IE specific URL here.
            }

            else if (netscape) {
               document.write("Netscape based browser");
               // Keep your Netscape specific URL here.
            }

            else {
               document.write("Unknown browser");
            }

            // You can include version to along with any above condition.
            document.write("<br /> Browser version info : " + version );
         //-->
      </script>

   </body>
</html>