Releases mouse capture if it's currently enabled on an element within this document. Enabling mouse capture on an element is done by calling element.setCapture().
The DOMImplementation interface represent an object providing methods which are not dependent on any particular document. Such an object is returned by the Document.implementation property.
The EncryptedMediaExtenstions API provides interfaces for controlling the playback of content which is subject to a digital restrictions management scheme.
The HTMLFormElement.reportValidity() method returns true if the element's child controls satisfy their validation constraints. Whenfalse is returned, cancelable invalid events are fired for each invalid child and validation problems are reported to the user.