JavaScript & HTML - Stop Background Sound after Video Screen is Exit

Question

I want to stop the video from playing the video background sound or stop the sounds it AFTER I exit the video screen.

Full screen

The bug right now is t

Answer 1

This worked for me

            document.addEventListener('fullscreenchange', exitHandler);
            document.addEventListener('webkitfullscreenchange', exitHandler);
            document.addEventListener('mozfullscreenchange', exitHandler);
            document.addEventListener('MSFullscreenChange', exitHandler);

            function exitHandler() {
                if (!document.fullscreenElement && !document.webkitIsFullScreen && !document.mozFullScreen && !document.msFullscreenElement) {
                    video.pause();
                }
            }