Window: getScreenDetails() method

{{APIRef("Window Management API")}}{{SeeCompatTable}}{{securecontext_header}}

The getScreenDetails() method of the {{domxref("Window")}} interface returns a {{jsxref("Promise")}} that fulfills with a {{domxref("ScreenDetails")}} object instance representing the details of all the screens available to the user's device.

Syntax

getScreenDetails()

Parameters

None.

Return value

A {{jsxref("Promise")}} that fulfills with a {{domxref("ScreenDetails")}} object instance.

Exceptions

• NotAllowedError {{domxref("DOMException")}}
  • : Thrown if a {{httpheader("Permissions-Policy/window-management", "window-management")}} Permissions-Policy is set that blocks use of the Window Management API, or if the user has explicitly denied the browser's permission request to use the API.

Examples

When getScreenDetails() is invoked, the user will be asked for permission to manage windows on all their displays (the status of this permission can be checked using {{domxref("Permissions.query()")}} to query window-management). Provided they grant permission, the resulting {{domxref("ScreenDetails")}} object contains details of all the screens available to the user's system.

The below example opens a full-size window on each available display.

const screenDetails = await window.getScreenDetails();

// Open a full-size window on each screen available to the device
for (const screen of screenDetails.screens) {
  window.open(
    "https://example.com",
    "_blank",
    `left=${screen.availLeft},
    top=${screen.availTop},
    width=${screen.availWidth},
    height=${screen.availHeight}`,
  );
}

[!NOTE] See Multi-window learning environment for a full example (see the source code also).

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• Window Management API