Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener("fullscreenerror", (event) => { })
onfullscreenerror = (event) => { }

Event type

A generic Event.

Examples

const requestor = document.querySelector("div");
function handleError(event) {
  console.error("an error occurred changing into fullscreen");
  console.log(event);
}
requestor.addEventListener("fullscreenerror", handleError);
// or
requestor.onfullscreenerror = handleError;
requestor.requestFullscreen();