![]() For example, if your web app is playing a video, it can pause the video when the user puts the tab into the background, and resume playback when the user returns to the tab. You can detect the event and perform some actions or behave differently. When the user minimizes the window or switches to another tab, the API sends a visibilitychange event to let listeners know the state of the page has changed. ![]() Note: The Page Visibility API is especially useful for saving resources and improving performance by letting a page avoid performing unnecessary tasks when the document isn't visible.
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