<!DOCTYPE html> <html> <head> <title>An async script executes as soon as possible after a download is complete</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> <meta description="This test ensures an async script executes as soon as possible after a download is complete." /> <link rel="author" title="Microsoft" href="http://www.microsoft.com/" /> <link rel="help" href="https://html.spec.whatwg.org/multipage/#attr-script-async"/> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> </head> <body> <div id=log></div> <script type="text/javascript"> var t = async_test("async script executes as soon as possible after a download is complete"); function timeout() { t.step(function(){ assert_equals(document.getElementById("testresult").innerHTML, "21")}); t.done(); } var timer = setTimeout(timeout, 4000); function log(text) { var textNode = document.createTextNode(text); document.getElementById("testresult").appendChild(textNode); } </script> <span id="testresult"></span> <script src="log.py?sec=3&id=1" async></script> <script src="log.py?sec=1&id=2" async></script> </body> </html>