It's not straight forward though. different browsers implement this differently.
But you can do two things, use the offlineOnline browser api here
Ping a website you are sure will always be available such as Google in a http request. You can broadcast same event to other members saying the user is offline. That's it.
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It's not straight forward though. different browsers implement this differently.
But you can do two things, use the offlineOnline browser api here
Ping a website you are sure will always be available such as Google in a http request. You can broadcast same event to other members saying the user is offline. That's it.