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---
title: WindowClient.visibilityState
slug: Web/API/WindowClient/visibilityState
translation_of: Web/API/WindowClient/visibilityState
---
{{SeeCompatTable}}{{APIRef("Service Workers API")}}
La propriété **`visibilityState`**, en lecture seule de l'interface {{domxref("WindowClient")}} indique la visibilité du client courant. La valeur pourra être : `hidden`, `visible`, `prerender`, or `unloaded`.
## Syntaxe
```js
myVisState = WindowClient.visibilityState;
```
### Value
une {{domxref("DOMString")}}.
## Example
```js
event.waitUntil(clients.matchAll({
type: "window"
}).then(function(clientList) {
for (var i = 0; i < clientList.length; i++) {
var client = clientList[i];
if (client.url == '/' && 'focus' in client) {
if(visibilityState === 'hidden')
return client.focus();
}
}
}
if (clients.openWindow)
return clients.openWindow('/');
}));
});
```
## Spécifications
| Specification | Status | Comment |
| ---------------------------------------------------------------------------------------------------- | ------------------------------------ | ------------------- |
| {{SpecName('Service Workers', '#window-client-interface', 'WindowClient')}} | {{Spec2('Service Workers')}} | Initial definition. |
## Compatibilité des navigateurs
{{Compat("api.WindowClient.visibilityState")}}
|
