CaptureController: CaptureController() constructor
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The CaptureController
constructor creates a new CaptureController
object instance.
Syntax
js
CaptureController()
Parameters
None.
Examples
js
// Create a new CaptureController instance
const controller = new CaptureController();
// Prompt the user to share a tab, window, or screen.
const stream = await navigator.mediaDevices.getDisplayMedia({ controller });
// Query the displaySurface value of the captured video track
const [track] = stream.getVideoTracks();
const displaySurface = track.getSettings().displaySurface;
if (displaySurface == "browser") {
// Focus the captured tab.
controller.setFocusBehavior("focus-captured-surface");
} else if (displaySurface == "window") {
// Do not move focus to the captured window.
// Keep the capturing page focused.
controller.setFocusBehavior("no-focus-change");
}
Specifications
Specification |
---|
Screen Capture # dom-capturecontroller-constructor |
Browser compatibility
BCD tables only load in the browser