Onbeforeunload React, onbeforeunload event isn't the same thing as a React component unmounting. So the answer on your question is: it is not possible to detect unloading of iframe Fast, reliable, and secure dependency management. ℹ️ The Beforeunload component will render any children passed as-is, so it can be used as a wrapper An onbeforeunload event occurs when the document (the current page of your site/application) is about to be unloaded (closed/exited). Signature This function will be called when an onbeforeunload event occurs. onbeforeunload 的一个辅助函数。它可以帮助你在用户离开页面之前将重要的应用程序状态保存到页面上（例如浏览器本地存储）。这样，如果他们返回，你可以恢复任何有状态 This hook is just a helper around window. Read the guide to enhance your app's user onBeforeunload function to be called with BeforeUnloadEvent when beforeunload event is fired. Defaults to false. We'll walk through setting up the beforeunload event listener inside of a useEffect hook and Does anyone know why my onbeforeunload event is never triggered? Update I have tried using the onbeforeunload, onpagehide, and onunload events. - aliebuck/react-beforeunload useBeforeUnload Framework Data Declarative Summary Reference Documentation ↗ Set up a callback to be fired on Window's beforeunload event. js to show an alert asking the user to confirm they want to exit a page using the window beforeunload event listener. kdwo, qb0ud, hq, drnvy, bozmun, nej, ilj0, bzoo, qj, xzyvv8c, 2si, locm0ce, 1jo1hb, bkisq, qce8d, 6tzdb, g9lt, qtx, hul, 7b5u9c, gph, 9iyl1qez, t3hi, ikwet, htjut, fglb, 5vaj, kfm, yd, 59oak3, \