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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 user's browser. Which method should you use?
Correct Answer: D
Explanation/Reference: Explanation: Navigator onLine Property The onLine property returns a Boolean value that specifies whether the 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