關於「JavaScript get user agent」標籤，搜尋引擎有相關的訊息討論：

透過用戶代理偵測瀏覽器- HTTP | MDN2021年6月22日 · 透過用戶代理（user agent）去偵測瀏覽器看似簡單，要做好卻頗為困難。

... 因為很重要所以再說一次：實行用戶代理嗅探（User Agent sniffing）通常不是好主意。

... 因為Javascript 可能把這些東西都混為一談，然後你的網站就會在某些 ... HTTP access control (CORS) · HTTP authentication · HTTP caching ...缺少字詞： gl= | 必須包含以下字詞：gl=Browser detection using the user agent - HTTP | MDN2021年6月6日 · Using the user agent to detect the browser looks simple, but doing it well ... or < in any corresponding JavaScript because it is very easy to get ...缺少字詞： gl= | 必須包含以下字詞：gl=Updating the user agent of Googlebot | Google Search Central Blog2019年10月2日 · See Google crawlers (user agents) and Make sure Google can index JavaScript ... In December we'll start periodically updating the above user agent ... detect Googlebot via the user agent, then look for "Googlebot" within the user agent. ... join our webmaster office hours on YouTube or follow us on Twitter.How to detect Microsoft Edge in your website - Microsoft Docs2021年5月19日 · Twitter · LinkedIn · Facebook · Email ... Browsers provide mechanisms for websites to detect browser information ... Two such mechanisms supported on Microsoft Edge are User-Agent Client ... userAgent JavaScript method ...缺少字詞： gl= twQuick Tip: Detect the Browser and User Agent with AS3 - Tuts+ Code2011年1月31日 · With the User Agent stored, a simple search through the returned String will ... import fl.transitions. ... call to a JavaScript function will get the User Agent string and use the ... Follow Envato Tuts+; Facebook · Twitter · Pinterest.How to detect pages when a user browses inside twitter in app ...I don't believe it's possible to detect the Twitter in-app browser in JavaScript, because it uses a generic Web View with no identifiable properties ...缺少字詞： gl= | 必須包含以下字詞：gl=Device InfoDevice Info is a web browser security testing, privacy testing, and troubleshooting tool.Navigator userAgent Property - W3SchoolsWell organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, ...缺少字詞： gl= twChrome 网上应用店- Google 产品Google 为其产品（例如Google 搜索、Gmail、YouTube、Google+、Google 语音、Google 日历和Google 云端硬盘）创建的扩展程序。

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