Page lifecycleThe page lifecycle API helps you safely handle page suspensions or discards from memory. The freeze and resume events fire when the browser suspends or resumes a page from memory while the document.wasDiscarded property reports whether the page was reloaded after being dropped.limitedhttps://wicg.github.io/page-lifecycle/https://developer.mozilla.org/docs/Web/API/Documentapi.Document.freeze_eventapi.Document.resume_eventapi.Document.wasDiscardedhttps://nowyoucanuse.com/features--page-lifecycle.html