我有5个插件/扩展Firefox, Chrome, Internet Explorer(IE), Opera和Safari。
我如何正确识别用户浏览器和重定向(一旦安装按钮已被点击)下载相应的插件?
我有5个插件/扩展Firefox, Chrome, Internet Explorer(IE), Opera和Safari。
我如何正确识别用户浏览器和重定向(一旦安装按钮已被点击)下载相应的插件?
当前回答
短变体(更新2020年7月10日移动浏览器检测修复)
var browser = (function() { var test = function(regexp) {return regexp.test(window.navigator.userAgent)} switch (true) { case test(/edg/i): return "Microsoft Edge"; case test(/trident/i): return "Microsoft Internet Explorer"; case test(/firefox|fxios/i): return "Mozilla Firefox"; case test(/opr\//i): return "Opera"; case test(/ucbrowser/i): return "UC Browser"; case test(/samsungbrowser/i): return "Samsung Browser"; case test(/chrome|chromium|crios/i): return "Google Chrome"; case test(/safari/i): return "Apple Safari"; default: return "Other"; } })(); console.log(browser)
打字文件版本:
export enum BROWSER_ENUM {
EDGE ,
INTERNET_EXPLORER ,
FIRE_FOX ,
OPERA ,
UC_BROWSER ,
SAMSUNG_BROWSER ,
CHROME ,
SAFARI ,
UNKNOWN ,
}
const testUserAgent = (regexp: RegExp): boolean => regexp.test(window.navigator.userAgent);
function detectBrowser(): BROWSER_ENUM {
switch (true) {
case testUserAgent(/edg/i): return BROWSER_ENUM.EDGE;
case testUserAgent(/trident/i): return BROWSER_ENUM.INTERNET_EXPLORER;
case testUserAgent(/firefox|fxios/i): return BROWSER_ENUM.FIRE_FOX;
case testUserAgent(/opr\//i): return BROWSER_ENUM.OPERA;
case testUserAgent(/ucbrowser/i): return BROWSER_ENUM.UC_BROWSER;
case testUserAgent(/samsungbrowser/i): return BROWSER_ENUM.SAMSUNG_BROWSER;
case testUserAgent(/chrome|chromium|crios/i): return BROWSER_ENUM.CHROME;
case testUserAgent(/safari/i): return BROWSER_ENUM.SAFARI;
default: return BROWSER_ENUM.UNKNOWN;
}
}
export const BROWSER: BROWSER_ENUM = detectBrowser();
export const IS_FIREFOX = BROWSER === BROWSER_ENUM.FIRE_FOX;
函数式算法,只是为了好玩:
const BROWSER = Object.entries({
"Microsoft Edge": /edg/i,
"Microsoft Internet Explorer": /trident/i,
"Mozilla Firefox": /firefox|fxios/i,
"Opera": /opr\//i,
"UC Browser": /ucbrowser/i,
"Samsung Browser": /samsungbrowser/i,
"Google Chrome": /chrome|chromium|crios/i,
"Apple Safari": /safari/i,
"Unknown": /.+/i,
}).find(([, value]) => value.test(window.navigator.userAgent)).pop();
其他回答
如果您需要知道某个特定浏览器的数字版本是什么,可以使用下面的代码片段。目前它会告诉你Chrome/Chromium/Firefox的版本:
var match = $window.navigator.userAgent.match(/(?:Chrom(?:e|ium)|Firefox)\/([0-9]+)\./);
var ver = match ? parseInt(match[1], 10) : 0;
var BrowserType; (function (BrowserType) { BrowserType["OPERA"] = "Opera"; BrowserType["OPERA2"] = "OPR"; BrowserType["EDGE"] = "Edg"; BrowserType["CHROME"] = "Chrome"; BrowserType["SAFARI"] = "Safari"; BrowserType["FIREFOX"] = "Firefox"; BrowserType["UNKNOWN"] = "unknown"; })(BrowserType || (BrowserType = {})); const detectBrowser = () => { return Object.values(BrowserType).find((browser) => navigator.userAgent.indexOf(browser) != -1); }; console.log(detectBrowser());
你可以像这样检测它:
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)) {
alert('Firefox');
}
如果有人觉得这个有用,我已经把Rob W的答案变成了一个返回浏览器字符串的函数,而不是有多个浮动的变量。由于浏览器在不重新加载的情况下也不能真正改变,所以我让它缓存结果,以防止它在下次调用函数时需要计算出来。
/** * Gets the browser name or returns an empty string if unknown. * This function also caches the result to provide for any * future calls this function has. * * @returns {string} */ var browser = function() { // Return cached result if avalible, else get result then cache it. if (browser.prototype._cachedResult) return browser.prototype._cachedResult; // Opera 8.0+ var isOpera = (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0; // Firefox 1.0+ var isFirefox = typeof InstallTrigger !== 'undefined'; // Safari 3.0+ "[object HTMLElementConstructor]" var isSafari = /constructor/i.test(window.HTMLElement) || (function (p) { return p.toString() === "[object SafariRemoteNotification]"; })(!window['safari'] || safari.pushNotification); // Internet Explorer 6-11 var isIE = /*@cc_on!@*/false || !!document.documentMode; // Edge 20+ var isEdge = !isIE && !!window.StyleMedia; // Chrome 1+ var isChrome = !!window.chrome && !!window.chrome.webstore; // Blink engine detection var isBlink = (isChrome || isOpera) && !!window.CSS; return browser.prototype._cachedResult = isOpera ? 'Opera' : isFirefox ? 'Firefox' : isSafari ? 'Safari' : isChrome ? 'Chrome' : isIE ? 'IE' : isEdge ? 'Edge' : isBlink ? 'Blink' : "Don't know"; }; console.log(browser());
使用以下代码检查IE浏览器。
console.log(/MSIE|Trident/.test(window.navigator.userAgent))
OR
var isIE = !!document.documentMode;
console.log(isIE)
谢谢