Document.onvisibilitychange - Web APIs 编辑

The Document.onvisibilitychange property represents the event handler that is called when a visibilitychange event reaches this object.

Safari doesn’t fire the visibilitychange event as expected when visibilityState transitions to hidden; so for that case, you need to also include code to listen for the pagehide event.

Syntax

obj.onvisibilitychange = function;

• function is the name of a user-defined function, without the () suffix or any parameters, or an anonymous function declaration.

Example

document.onvisibilitychange = function() {
  console.log("Visibility of page has changed!");
};

Specifications

Browser compatibility

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See also

• Page Visibility API