用js判断操作系统和浏览器类型

1     navigator.platform == "Win32"
2     navigator.platform == "Windows"

1 /Windows NT 5.0/i.test(navigator.userAgent)

1 /Windows NT 5.1/i.test(navigator.userAgent)

1 /Windows NT 5.2/i.test(navigator.userAgent)

1  /Windows NT 6.0/i.test(navigator.userAgent)

1 /Windows NT 6.1/i.test(navigator.userAgent)

1     navigator.platform == "Mac68K"
2     navigator.platform == "MacPPC"
3     navigator.platform == "Macintosh"
4     navigator.platform == "MacIntel"

1 navigator.platform == "X11"

1 /Linux/i.test(navigator.userAgent)

1     if(/Linux/i.test(navigator.userAgent)){
2         if(/android/i.test(navigator.userAgent.toLowerCase())){
3             return "android";
4         }
5     }

1 /ie/i.test(navigator.userAgent.toLowerCase());

1 /firefox/i.test(navigator.userAgent.toLowerCase());

1 /chrome/i.test(navigator.userAgent.toLowerCase());

1 /opera/i.test(navigator.userAgent.toLowerCase());

1  /safari/i.test(navigator.userAgent.toLowerCase());

1 /micromessenger/i.test(navigator.userAgent.toLowerCase());