The ProgressEvent() constructor returns a newly created ProgressEvent, representing the current completion of a long process.
The UIEvent() constructor creates a new UIEvent.
The Uint8ClampedArray typed array represents an array of 8-bit unsigned integers clamped to 0-255; if you specified a value that is out of the range of [0,255], 0 or 255 will be set instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
The CustomEvent() constructor creates a new CustomEvent.
This constructor is used to create a synthetic DragEvent object.
The EventSource() constructor returns a newly-created EventSource, which represents a remote ressource.
The FormData() constructor creates a new FormData object.
The InputEvent() constructor creates a new InputEvent.
The MediaStreamTrackEvent() constructor returns a newly created MediaStreamTrackEvent object, which represents an event announcing that a MediaStreamTrack has been added to or removed from a MediaStream.
The MessageChannel() constructor of the MessageChannel interface returns a new MessageChannel object with two new MessagePort objects.
The MouseEvent() constructor creates a new MouseEvent.