谁能给一个基于JS或者JQuery的函数，判断当前的用户是在用PC浏览器还是手机浏览器还是平板电脑浏览器？！

Question

如题，俺需要通过用户的不同的操作环境渲染不同的界面，如何实现上述判断？

Answer 1

你只要判断浏览器版本就行了
var browserName = navigator.userAgent.toLowerCase();
mybrowser = {
version: (browserName.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [0, '0'])[1],
safari: /webkit/i.test(browserName) && !this.chrome,
opera: /opera/i.test(browserName),
firefox:/firefox/i.test(browserName),
msie: /msie/i.test(browserName) && !/opera/.test(browserName),
mozilla: /mozilla/i.test(browserName) && !/(compatible|webkit)/.test(browserName) && !this.chrome,
chrome: /chrome/i.test(browserName) && /webkit/i.test(browserName) && /mozilla/i.test(browserName)
}追问

可是这样只是获得了当前浏览器的Name,现在很多浏览器都支持多平台啊，比如PC，手机，平板电脑都安装了safari浏览器……

追答

试试这个吧，不知道手机系统能不能判断出来， jquery也没试
function detectOS() {
var sUserAgent = navigator.userAgent;
var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel");
if (isMac) return "Mac";
var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
if (isUnix) return "Unix";
var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
if (isLinux) return "Linux";
if (isWin) {
var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1;
if (isWin2K) return "Win2000";
var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") > -1;
if (isWinXP) return "WinXP";
var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1;
if (isWin2003) return "Win2003";
var isWinVista= sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1;
if (isWinVista) return "WinVista";
var isWin7 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1;
if (isWin7) return "Win7";
}
return "other";
}

document.writeln("您的操作系统是：" + detectOS());