Checks whether the "Alt" key is pressed.
Checks whether the "Ctrl" key is pressed.
Checks whether a given key is pressed.
Checks whether the "Shift" key is pressed.
Subscribes to a global click event, executing the callback provided when the mouse is clicked.
Subscribes to a global key event, executing the callback provided when the key is both pressed (key down) and released (key up).
Describes an object that manages event handlers and state for global window and DOM events.