At the end of https://beta.observablehq.com/@forresto/labyrinth there are some animations that are done by the time the reader gets to bottom of page. Is there a way to trigger (re)setting the seed to start the animation when the person scrolls there (for the first time)?

Certainly – at least in nice browsers (not Safari, yet)! See my pauser notebook , which uses IntersectionObserver to pause cells until a user can see them in their viewport.

(re)setting something on scroll-into-view

forresto February 14, 2018, 2:37pm 4

One caveat I noticed with IntersectionObserver : if the element is wider than the cell view it won’t start.

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(re)setting something on scroll-into-view

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