<!doctype html> <meta charset=utf-8> <title>CSSTransition.effect.target</title> <!-- TODO: Add a more specific link for this once it is specified. --> <link rel="help" href="https://drafts.csswg.org/css-transitions-2/#csstransition"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="support/helper.js"></script> <div id="log"></div> <script> 'use strict'; test(t => { const div = addDiv(t); div.style.left = '0px'; getComputedStyle(div).transitionProperty; div.style.transition = 'left 100s'; div.style.left = '100px'; const animation = div.getAnimations()[0]; assert_equals(animation.effect.target, div, 'Animation.target is the animatable div'); }, 'Returned CSS transitions have the correct Animation.target'); test(t => { addStyle(t, { '.init::after': 'content: ""; width: 0px; height: 0px; ' + 'transition: all 10s;', '.change::after': 'width: 100px; height: 100px;' }); const div = addDiv(t, { class: 'init' }); getComputedStyle(div).width; div.classList.add('change'); const anims = document.getAnimations(); assert_equals(anims.length, 2, 'Got transitions running on ::after pseudo element'); assert_equals(anims[0].effect.target, anims[1].effect.target, 'Both transitions return the same target object'); }, 'effect.target should return the same CSSPseudoElement object each time'); test(t => { addStyle(t, { '.init::after': 'content: ""; width: 0px; transition: all 10s;', '.change::after': 'width: 100px;' }); const div = addDiv(t, { class: 'init' }); getComputedStyle(div).width; div.classList.add('change'); const pseudoTarget = document.getAnimations()[0].effect.target; const effect = new KeyframeEffect(pseudoTarget, { background: ["blue", "red"] }, 3000); const newAnim = new Animation(effect, document.timeline); newAnim.play(); const anims = document.getAnimations(); assert_equals(anims.length, 2, 'Got animations running on ::after pseudo element'); assert_not_equals(anims[0], newAnim, 'The scriped-generated animation appears last'); assert_equals(newAnim.effect.target, pseudoTarget, 'The effect.target of the scripted-generated animation is ' + 'the same as the one from the argument of ' + 'KeyframeEffect constructor'); assert_equals(anims[0].effect.target, newAnim.effect.target, 'Both the transition and the scripted-generated animation ' + 'return the same target object'); }, 'effect.target from the script-generated animation should return the same ' + 'CSSPseudoElement object as that from the CSS generated transition'); </script>