<!DOCTYPE html>

<html>

    <head>

        <meta charset="UTF-8">

        <title>根据不同浏览器显示不同版本</title>

        <script type="text/javascript" src="js/common/jquery-1.8.1.min.js" ></script>

    </head>

    <body>

        根据不同浏览器显示不同版本

    </body>

    <script>

        $(function(){

            userAgent=window.navigator.userAgent.toLowerCase();

            if(userAgent.indexOf("firefox")>=1){

                alert("火狐");

            }

            var browser = navigator.appName;

            var b_version = navigator.appVersion;

            var version=b_version.split(";");

            try {

                var trim_Version=version[1].replace(/[ ]/g,"");

                if(browser == "Microsoft Internet Explorer" && (trim_Version=="MSIE9.0" || trim_Version=="MSIE8.0")) {

                    alert("IE9！");

                }

            } catch(e) {

                //console.log(e.message);

            }

        });

    </script>

</html>