Solved: What is the front-end navigator, what is it for, roughly mention it

navigator is a global object that provides browser-related information and operation interfaces. In front-end development, we usually use the navigator object to obtain information about the user's browser, such as the browser's name, version, language setting, device type, and so on. Common properties and methods of the
navigator object include:
navigator.userAgent : Returns the user agent string of the current browser.
navigator.appName : Returns the name of the current browser.
navigator.appVersion : Returns the version number of the current browser.
navigator.language : Returns the language setting of the current browser.
navigator.platform : Returns the operating system platform of the device where the current browser is located.
navigator.geolocation : Provides a set of APIs for obtaining the geographic location information of the current device.
navigator.mediaDevices : Provides a set of APIs for accessing audio, video, screen and other media devices of the current device.
navigator.serviceWorker : Provides a set of APIs for registering and managing Service Workers in the browser, and implementing functions such as offline caching and push notifications.
It should be noted that the properties and methods of the navigator object may behave differently in different browsers and devices, so compatibility tests and appropriate downgrades should be performed when using them.