The fullscreenchange event is fired immediately after the browser switches into or out of full-screen mode.
The fullscreenerror event is fired when the browser cannot switch to full-screen mode.
The resize event fires when the document view (window) has been resized.
Resize the browser window to fire the resize event.
Window height:
Window width:
The compositionend event is fired when a text composition system such as an input method editor completes or cancels the current composition session.