The CSSPerspective interface of the CSS Typed Object Model API represents the perspective() value of the individual transform property in CSS. It inherits properties and methods from its parent CSSTransformValue.
CSSPerspective
MDN Reference
The is2D read-only property of the CSSTransformComponent interface indicates where the transform is 2D or 3D.
is2D
The length property of the CSSPerspective interface sets the distance from z=0.
length
The toMatrix() method of the CSSTransformComponent interface returns a DOMMatrix object.
toMatrix()