Visibilitychange event. The event is not cancelable. visibilitychange イベントは、タブのコンテンツが表示状態または非表示状態になったときに document に発生します。. Summary The Page Visibility API is a valuable tool for detecting when a user returns to your page, allowing you to execute specific actions such as updating content or resuming media playback. Jun 30, 2015 · The visibilitychange event is fired when the content of a tab has become visible or has been hidden. visibilityState Document. These services enable TanStack Query to Feb 28, 2026 · No visibilitychange handler for real-time reconnection (connection lost when returning to app) WebSocket reconnection attempts too low (≤5 exhausted before user returns) No room/channel re-subscribe after real-time reconnection (events stop flowing) No SPA view state persistence (user loses position on navigation) Informational (Nice to Have) May 2, 2025 · The visibilitychange event is sent to an XRSession to inform it when it becomes visible or hidden, or when it becomes visible but not currently focused. Fullscreen → background works perfectly — iOS automatically enters Picture-in-Picture. I want Picture-in-Picture to activate automatically when the user goes home — swipe up from the bottom edge of the screen (on an iPhone with Face ID) or press the Home button (on an iPhone with a Home button). UPDATE I tried using different vendor prefixes for the event name (visibilitychange, webkitvisibilitychange, mozvisibilitychange, msvisibilitychange) but but still the event is not triggered when I switch to a different program in the taskbar or ALT + TAB, or even if I open the start menu thing in windows with the windows key, which covers the whole screen. Upon receiving the event, you can check the value of the session's visibilityState property to determine the new visibility state. This simple event lets a web page know when it’s visible to the user or hidden in the background, so it can act smarter - like saving battery, pausing timers, or deferring background tasks until you return. I can reproduce the exact same issue Dec 27, 2024 · If you’ve ever asked yourself this question, know that there’s an easy and fast way to find out: you’re about to discover the magic of visibilitychange! This event, natively present in all browsers and widely supported even by older versions, allows us to know when the user is viewing our tab or not. Nov 4, 2025 · That’s all because of the Page Visibility API - specifically, the visibilitychange event. The visibilitychange event is fired at the document when the content of its tab have become visible or have been hidden. Apr 20, 2025 · In there scenarios, the page transitions from a hidden to a visible state, triggering the visibilitychange event. 6 days ago · I'm building a Capacitor iOS app with a plain <video> element playing an MP4 file inline. But Mar 17, 2026 · Infrastructure services are cross-cutting utilities in `@tanstack/query-core` that provide automatic refetching capabilities and state management coordination. Feb 20, 2026 · The visibilitychange event is fired at the document when its visibility status changes — for example, when the user switches browser tabs, navigates to a new page, minimizes or closes the browser, or on mobile, switches to a different app. Mar 5, 2026 · "Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers. The User Agent MUST fire the visibilitychange event at the Document when the User Agent determines that the visibility of the Document contained by the top level browsing context has changed. The visibilitychange event is a valuable tool in the web developer's toolkit. hidden 使用页面可见性，不丢失用户和应用程序状态 详细解释了为什么应该使用 visibilitychange，而不是 beforeunload / unload。 页面生命周期 API 提供了在 web 应用程序中处理页面生命周期行为的最佳实践指导。 We would like to show you a description here but the site won’t allow us. Feb 14, 2024 · The MDN docs say that the visibilitychange event fires with a visibilityState of hidden when a user navigates to a new page, switches tabs, closes the tab, minimizes or closes the browser, or, on The visibilitychange event is fired at the document when the contents of its tab have become visible or have been hidden. Dec 30, 2025 · Events The Page Visibility API adds the following events to the Document interface: visibilitychange Fired when the content of a tab has become visible or has been hidden. You only have two value possible, visible or hidden. By understanding and implementing this event, you can create more responsive and user-friendly web applications. 参见 页面可见性 API Document. Examples Pausing audio on page hide This example pauses playing audio when the page is hidden and resumes playing when the page becomes visible again. klvkzg dqftbt aaxhp pwz kcalj nmewh obt obuxqs lpirpn pwflfrm