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This article introduces the knowledge of "how to use navigator objects in JavaScript". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Browser application name

The appName property returns the application name of the browser:

Example

Document.getElementById ("demo"). InnerHTML = "navigator.appName is" + navigator.appName

Strange to you, "Netscape" is a general name for the application names of IE11, Chrome, Firefox, and Safari.

Browser application code name

The appCodeName property returns the browser's application code name:

Example

Document.getElementById ("demo"). InnerHTML = "navigator.appCodeName is" + navigator.appCodeName

"Mozilla" is the application code name for Chrome, Firefox, IE, Safari, and Opera.

Browser engine

The product property returns the product name of the browser engine:

Example

Document.getElementById ("demo"). InnerHTML = "navigator.product is" + navigator.product

Browser version

The appVersion property returns version information about the browser:

Example

Document.getElementById ("demo"). InnerHTML = navigator.appVersion

Browser proxy

The userAgent property returns the user agent header (user-agent header) sent by the browser to the server:

Example

Document.getElementById ("demo"). InnerHTML = navigator.userAgent

Warning!

Information from navigator objects is often misleading and should not be used to detect browser versions because:

Different browsers can use the same name

Navigation data can be changed by browser owner

Some browsers misidentify themselves to bypass site tests

The browser cannot report a new operating system released later than the browser

Browser platform

The platform property returns the browser platform (operating system):

Example

Document.getElementById ("demo"). InnerHTML = navigator.platform

Browser language

The language property returns the browser language:

Example

Document.getElementById ("demo"). InnerHTML = navigator.language

Is the browser online?

The onLine property returns true, if the browser is online:

Example

Document.getElementById ("demo"). InnerHTML = navigator.onLine

Is Java enabled?

The javaEnabled () method returns true, if Java is enabled:

Example

Document.getElementById ("demo"). InnerHTML = navigator.javaEnabled ()

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