The resize event of the VisualViewport interface is fired when the visual viewport is resized. This allows you to position elements relative to the visual viewport as it is zoomed, which would normally be anchored to the layout viewport.
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("resize", (event) => { })
onresize = (event) => { }A generic Event.
See the VisualViewport landing page for a usage demo.