WindowClient: visibilityState プロパティ
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.
visibilityState
は WindowClient
インターフェイスの読み取り専用プロパティで、現在のクライアントの可視性を示します。 この値は、"hidden"
、"visible"
、"prerender"
のいずれかです。
値
文字列です(値については Document.visibilityState
を参照)。
例
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("/");
}
}),
);
仕様書
Specification |
---|
Service Workers # client-visibilitystate |
ブラウザーの互換性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
visibilityState |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.