获取操作系统信息

getOSInfo.js

var getOSInfo = function() {
        var ua = navigator.userAgent;
        // Ref: http://msdn.microsoft.com/en-us/library/ms537503%28VS.85%29.aspx
        var token = [
            // 顺序无关，根据占用率排列
            ["Windows NT 5.1", "WinXP"],
            ["Windows NT 6.0", "WinVista"],
            ["Windows NT 6.1", "Win7"],
            ["Windows NT 5.2", "Win2003"],
            ["Windows NT 5.0", "Win2000"],
            ["Macintosh", "Macintosh"],
            ["Windows","WinOther"],
            ["Ubuntu", "Ubuntu"],
            ["Linux", "Linux"]
        ];

        for (var i = 0, len = token.length; i < len; ++i) {
            if (ua.indexOf(token[i][0]) != -1) {
                return token[i][1];
            }
        }
        return "Other";
	};