Specifies an event listener to receive devicelight events. These events occur when the device's light level sensor detects a change in the intensity of the ambient light level.
Window.outerHeight gets the height in pixels of the whole browser window. It represents the height of the whole browser window including sidebar (if expanded), window chrome and window resizing borders/handles.
Returns a reference to the screen object associated with the window. The screen object, implementing the Screen interface, is a special object for inspecting properties of the screen on which the current window is being rendered.