| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>Setting the effect of a scroll-driven animation</title> |
| <link rel="help" |
| href="https://drafts.csswg.org/web-animations-1/#setting-the-associated-effect"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="testcommon.js"></script> |
| <style> |
| #scroller { |
| overflow-y: scroll; |
| height: 100px; |
| width: 100px; |
| } |
| |
| #target { |
| width: 100%; |
| height: 1000%; |
| background-color: green; |
| } |
| </style> |
| <body> |
| |
| <div id="scroller"> |
| <div id="target"></div> |
| </div> |
| |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| const scroller = document.getElementById("scroller"); |
| const target = document.getElementById("target"); |
| |
| const timeline = new ScrollTimeline({ source: scroller }); |
| const animation = target.animate(null, { timeline }); |
| assert_percents_equal(animation.effect.getComputedTiming().endTime, 100); |
| |
| animation.effect = new KeyframeEffect(target, { opacity: [0, 1] }); |
| assert_percents_equal(animation.effect.getComputedTiming().endTime, 100); |
| }, 'Setting the effect of scroll-driven animation computes percentage timing values.'); |
| |
| </script> |
| </body> |
