Direction the GamepadDisplayVariableButton.buttonElement should move to represent being pressed
Optional
directionDrag direction indicator / highlight element for this variable button
Optional
extraoptional, for your own use
Optional
highlightThe element to add the touch and press classses to - to represent touching or pressing on this button, defaults to the same element as buttonElement
How far the GamepadDisplayVariableButton.buttonElement should move to represent being pressed fully in HTML or SVG pixels
The element to move to represent pressing on this button