Document: fullscreenerror event

The fullscreenerror event is fired when the browser cannot switch to full-screen mode.

As with the fullscreenchange event, two fullscreenerror events are fired; the first is sent to the Element which failed to change modes, and the second is sent to the Document which owns that element.

For some reasons that switching into full-screen mode might fail, see the guide to the Fullscreen API.

const requestor = document.querySelector('div');

document.addEventListener('fullscreenerror', (event) => {
  console.error('an error occurred changing into fullscreen');
  console.log(event);
});

requestor.requestFullscreen();

• fullscreenchange
• Fullscreen API
• Guide to the Fullscreen API