Check if browser is mozilla javascript關於「Navigator userAgentData」標籤，搜尋引擎有相關的訊息討論：
Navigator: userAgentData property - Web APIs - MDN Web Docsdeveloper.mozilla.org › References › Web APIs › NavigatorNavigator.userAgentData is coming as undefined - Stack Overflowstackoverflow.com › questions › navigator-useragentdata-i...NavigatorUAData: getHighEntropyValues()