The overflow-y property specifies the handling of overflow in the vertical direction.
object.style.overflowY = "value";
<'overflow-y'> = visible | hidden | clip | scroll | auto
There is no special handling of overflow, the box's content is rendered outside the box if positioned there.
The box's content is clipped to its padding box and the UA must not provide any scrolling user interface to view the content outside the clipping region, nor allow scrolling by direct intervention of the user.
Like hidden, but also forbids scrolling.
Indicates that the content is clipped to the padding box, but can be scrolled into view.
Automatically specified by the user agent.
World Wide Web Consortium (W3C)