WindowClient: visibilityState property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
Note: This feature is only available in Service Workers.
The visibilityState read-only property of the WindowClient interface indicates the visibility of the current client. This value can be one of "hidden", "visible", or "prerender".
Value
A string (See Document.visibilityState for values).
Examples
js
event.waitUntil( clients .matchAll({ type: "window", }) .then((clientList) => { for (const client of clientList) { if (client.url === "/" && "focus" in client) { if (client.visibilityState === "hidden") return client.focus(); } } if (clients.openWindow) { return clients.openWindow("/"); } }), ); Specifications
| Specification |
|---|
| Service Workers> # client-visibilitystate> |
Browser compatibility
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