#IntersectionObserver: relativeToViewport() method

The relativeToViewport method can be used to specify a LynxView as a reference node, and the reference node's viewport can be scaled according to margins.

#grammar

relativeToViewport(
   margins ? margins : {left: 0, right: 0, top: 0, bottom: 0}
): IntersectionObserver;

#Parameters

#margins

margins ? margins : { left: 0, right: 0, top: 0, bottom: 0 };

Specifies the zoom value of the reference node window. This value only affects the detection of the intersection state and does not affect the actual view display. A positive value means expanding the reference node window boundary, and a negative value means shrinking the reference node window boundary.

#return value

IntersectionObserver object.

#Precautions

The intersection state between the target node and the reference node and the target node and the ancestor node is defined as the smallest intersection ratio as follows:

• The intersection ratio between the target node and LynxView (scaled by margins)
• The intersection ratio between the target node and the ancestor node. The ancestor node includes the nodes on the path from the target node to LynxView. The ancestor node will be ignored when overflow: visible is set.

#Compatibility