Get Monitor Count

Question

I have a web application that I'd like to implement the following behavior.

When you click on a specific link:

• If the user has more than one monitor - open the url in a window with a given name.

• Otherwise - change the iframe's src attribute to that of the url.

How do I detect the monitor count in JavaScript?

If it's impossible, a Chrome only solution would also work since this is for an intranet app.

Answer 1

As others have said the only sensible way to do this is to ask the user. A proposal to allow this has been raised and declined before. Multi monitor setups are not very common in the general population which is why this is ignored.

The alternatives are:

• Prompt the user.
• Ask the user to run a browser extension (less fun and more risky).
• Run through a plugin (also not very fun).
• Serve your app through something like WebkitJS

Overall - for normal websites the only option is to prompt the user.