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 Nightly # client-visibilitystate |
Browser compatibility
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