Check if browser is mozilla javascript關於「Window navigator userAgent」標籤，搜尋引擎有相關的訊息討論：
Navigator: userAgent property - Web APIs | MDNdeveloper.mozilla.org › References › Web APIs › NavigatorHow to set navigator userAgent? - javascript - Stack Overflowstackoverflow.com › questions › how-to-set-navigator-user...Navigator userAgent Property - W3Schoolswww.w3schools.