WindowClient.visibilityState

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".

Syntax

var myVisState = windowClient.visibilityState;

Value

A DOMString (See Document.visibilityState for values).

Example

event.waitUntil(clients.matchAll({
    type: "window"
  }).then(function(clientList) {
    for (let i = 0; i < clientList.length; i++) {
      let client = clientList[i];
      if (client.url == '/' && 'focus' in client) {
        if (client.visibilityState === 'hidden')
          return client.focus();
        }
      }
    }

    if (clients.openWindow) {
      return clients.openWindow('/');
    }
  }));
});

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
visibilityState
42
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
?
11.1
No
42
44
?
11.3
4.0

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https://developer.mozilla.org/en-US/docs/Web/API/WindowClient/visibilityState