Can Firefox detect MetaKey?

Question

I\'m working on a Firefox extension and struggle with the meta key (Windows key on my keyboard). KeyboardEvent.metaKey is supposed to detect it but alway

Answer 1

Short answer No,

Notice that the meta key on windows is nothing but the windows key.

As the time of this writing, Firefox 55 is released but it still can't detect the button been pressed by returning false in the metaKey property. Because of a bug.

I think you're better off using shiftKey which has a property with the same name on the event object.