PositioningFunction

typedef

Parameters

elementRect: Rect: The rect of the element to be positioned.
targetRect: Rect: The rect of the target the element (its rect) is relatively positioned to.
viewportRect: Rect: The rect of the visual browser viewport.
limiterRect?: Rect

Returns

DomPositioningFunctionResult | null: When the function returns null, it will not be considered by getOptimalPosition.