This feature has been deprecated. Use Element#scrollTo() instead.
Load unpoly-migrate.js
to polyfill deprecated features.
Scrolls the given viewport to the given Y-position.
A "viewport" is an element that has scrollbars, e.g. <body> or
a container with overflow-x: scroll.
This will scroll a <div class="main">...</div> to a Y-position of 100 pixels:
up.scroll('.main', 100)
The scrolling can (optionally) be animated.
up.scroll('.main', 100, { behavior: 'smooth' })
The absolute number of pixels to set the vertical scroll position to.
When set to 'instant', this will immediately scroll to the new position.
When set to 'smooth', this will scroll smoothly to the new position.