css-animation-commit-styles.html (1142B)
1 <!DOCTYPE html> 2 <title>Calling commitStyles after Node.moveBefore should commit mid-transition value</title> 3 <script src="/resources/testharness.js"></script> 4 <script src="/resources/testharnessreport.js"></script> 5 6 <body> 7 <section id="old-parent"> 8 <div id="item"></div> 9 </section> 10 <section id="new-parent"> 11 </section> 12 <style> 13 @keyframes anim { 14 from { 15 transform: translateX(100px); 16 } 17 18 to { 19 transform: translateX(400px); 20 } 21 } 22 23 #item { 24 position: relative; 25 width: 100px; 26 height: 100px; 27 background: green; 28 animation: 1s linear infinite alternate anim; 29 animation-delay: 100ms; 30 } 31 </style> 32 <script> 33 promise_test(async t => { 34 const item = document.querySelector("#item"); 35 await new Promise(resolve => item.addEventListener("animationstart", resolve)); 36 37 // Reparent item 38 document.body.querySelector("#new-parent").moveBefore(item, null); 39 40 item.getAnimations()[0].commitStyles(); 41 assert_true("transform" in item.style); 42 assert_not_equals(item.style.transform, "none"); 43 }); 44 </script> 45 </body>