<!DOCTYPE html> <meta charset=utf-8> <title>Bug 1295852</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"> <body> <script> var names = [ "span", "_moz_generated_content_before", "_moz_generated_content_after" ]; if (SpecialPowers.getBoolPref("dom.animations-api.core.enabled")) { names.forEach(name => { var element = document.createElement(name); element.animate({ "color": ["red", "blue"] }, { duration: 1000 }); is(element.getAnimations().length, 1); }); } else { ok("Test requires Web Animations, which is disabled."); } </script>