You are developing a web application that can function when users are not connected to the Internet.

You need to check the Internet connectivity status of a users browser.

Which method should you use?

A. Option A

B. Option B

C. Option C

D. Option D

Explanation:

Navigator onLine Property

The onLine property returns a Boolean value that specifies whetherthe browser is in online or offline mode.

Example

Find out whether the browser is online:

var x = -Is the browser online? – + navigator.onLine;

The result of x will be:

Is the browser online? true

Reference: Navigator onLine Property