获取浏览器的类型、版本及操作系统信息

敬上代码，抛砖引玉

var browserInfo = function() {    var NT = {        '4.90': 'Windows ME',        '4.0': 'Windows NT',        '5.0': 'Windows 2000',        '5.01': 'Windows 2000 SP1',        '5.1': 'Windows XP',        '5.2': 'Windows XP 64-bit / Windows Server 2003',        '6.0': 'Windows Vista / Windows Server 2008',        '6.1': 'Windows 7 / Windows Server 2008 R2',        '6.2': 'Windows 8',        '6.3': 'Windows 8.1',        '6.4': 'Windows 10 Technical Preview',        '10.0': 'Windows 10'    }    var userAgent = navigator.userAgent.toLowerCase();    var platform = navigator.platform;    var browserName = /(msie\s|trident.*rv:)([\w.]+)/.test(userAgent) ? 'Internet Explorer': (window.opera && window.opera.version ? 'Opera': ((userAgent.indexOf('edge') > -1) ? 'Microsoft Edge': ((userAgent.indexOf('chrome') > -1) ? 'Chrome': ((userAgent.indexOf("firefox") > -1) ? 'Firefox': (userAgent.indexOf('safari') > -1 ? 'Safari': 'Unknown')))));    var browserVersion = browserName == 'Internet Explorer' ? (userAgent.indexOf('rv:') > -1 ? userAgent.match(/rv:[\d.]+/gi)[0].replace('rv:', '') : userAgent.match(/msie\s[\d.]+/gi)[0].replace('msie ', '')) : (browserName == 'Microsoft Edge' ? userAgent.match(/edge\/[\d.]+/gi)[0].replace('edge/', '') : (browserName == 'Firefox' ? userAgent.match(/firefox\/[\d.]+/gi)[0].replace('firefox/', '') : (browserName == 'Chrome' ? userAgent.match(/chrome\/[\d.]+/gi)[0].replace('chrome/', '') : (browserName == 'Safari' ? userAgent.match(/safari\/[\d.]+/gi)[0].replace('safari/', '') : 'Unknown'))));    var browserEdition = browserVersion.split('.')[0];    var kernelName = userAgent.indexOf('trident') > -1 ? 'Trident': userAgent.indexOf('edge') > -1 ? 'Edge': (((userAgent.indexOf('applewebkit') > -1) ? 'Webkit': ((userAgent.indexOf('gecko') > -1) ? 'Gecko': 'Unknown')));    var kernelVersion = kernelName == 'Trident' ? (userAgent.match(/Trident\/[\d.]+/gi)[0].replace('Trident/', '')) : (browserName == 'Firefox' ? userAgent.match(/gecko\/[\d.]+/gi)[0].replace('gecko/', '') : ((browserName == 'Chrome' || browserName == 'Safari') ? userAgent.match(/applewebkit\/[\d.]+/gi)[0].replace('applewebkit/', '') : (browserName == 'Microsoft Edge' ? userAgent.match(/edge\/[\d.]+/gi)[0].replace('edge/', '') : 'Unknown')));    var kernelEdition = kernelVersion.split('.')[0];    var osName = userAgent.indexOf('android') > -1 ? 'Android': (userAgent.indexOf('ipad') > -1 ? 'iOS(iPad)': (userAgent.indexOf('iphone') > -1 ? 'iOS(iPhone)': userAgent.indexOf('windows phone') > -1 ? 'Windows Phone': (((platform == "Win32") || (platform == "Windows") ? 'Microsoft Windows': (navigator.platform == "Mac68K") || ((navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel") ? 'Apple Mac': 'Unknown')))));    var osEdition = osName == 'Android' ? userAgent.match(/android\s[\d.]+/gi)[0].replace('android ', '') : ((osName == 'iOS(iPad)' || osName == 'iOS(iPhone)') ? userAgent.match(/os\s[\d_]+/gi)[0].replace('os ', '').replace('_', '.') : (osName == 'Windows Phone' ? userAgent.match(/windows\sphone\s[\d.]+/gi)[0].replace('windows phone ', '').replace('_', '.') : (osName == 'Microsoft Windows' ? (NT[userAgent.match(/windows\snt\s[\d.]+/gi)[0].replace('windows nt ', '')] ? NT[userAgent.match(/windows\snt\s[\d.]+/gi)[0].replace('windows nt ', '')] : 'Unknown') : 'Unknown')));    return {        browser: {            name: browserName,            edition: browserEdition,            version: browserVersion        },        kernel: {            name: kernelName,            edition: kernelEdition,            version: kernelVersion        },        os: {            name: osName,            edition: osEdition        }    };  }