判断浏览器的js代码

<html> <head> <meta http-equiv="Content-type" content="text/html; charset=gb2312"> <title>JS 判断浏览器</title> </head> <body> <hr> <!--判断访问者的浏览器（类型）以及版本--> <script type="text/javascript"> var browser=navigator.appName var b_version=navigator.appVersion var version=parseFloat(b_version) document.write("Browser name: "+ browser) document.write(" ") document.write("Browser version: "+ version) </script> <hr> <!--更多有关访问者浏览器（详细信息）--> <script type="text/javascript"> document.write("<p>Browser: ") document.write(navigator.appName + "</p>") document.write("<p>Browserversion: ") document.write(navigator.appVersion + "</p>") document.write("<p>Code: ") document.write(navigator.appCodeName + "</p>") document.write("<p>Platform: ") document.write(navigator.platform + "</p>") document.write("<p>Cookies enabled: ") document.write(navigator.cookieEnabled + "</p>") document.write("<p>Browser's user agent header: ") document.write(navigator.userAgent + "</p>") </script> <hr> <!--所有信息--> <script type="text/javascript"> var x = navigator document.write("CodeName=" + x.appCodeName) document.write(" ") document.write("MinorVersion=" + x.appMinorVersion) document.write(" ") document.write("Name=" + x.appName) document.write(" ") document.write("Version=" + x.appVersion) document.write(" ") document.write("CookieEnabled=" + x.cookieEnabled) document.write(" ") document.write("CPUClass=" + x.cpuClass) document.write(" ") document.write("OnLine=" + x.onLine) document.write(" ") document.write("Platform=" + x.platform) document.write(" ") document.write("UA=" + x.userAgent) document.write(" ") document.write("BrowserLanguage=" + x.browserLanguage) document.write(" ") document.write("SystemLanguage=" + x.systemLanguage) document.write(" ") document.write("UserLanguage=" + x.userLanguage) </script> <hr> <!--依据浏览器来提示用户--> <script type="text/javascript"> var browser=navigator.appName var b_version=navigator.appVersion var version=parseFloat(b_version) if ((browser=="Netscape"||browser=="Microsoft Internet Explorer") && (version>=4)) { document.write("Your browser is good enough!") } else { document.write("It's time to upgrade your browser!") } </script> </body> </html>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]