<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>Test for Bug 1314032</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1314032">Mozilla Bug 1243846</a> <p id="display"></p> <pre id="test"> <script type="application/javascript"> let win = window.open(URL.createObjectURL(new Blob([ '<meta charset="utf-8">' + '<script>' + 'let observer = new IntersectionObserver(([entry]) => {' + 'document.body.textContent += entry.time' + '});' + 'observer.observe(document.documentElement);' + '<\/script>' ], {'type': 'text/html'}))); win.onload = function () { win.close(); ok(true); SimpleTest.finish(); } SimpleTest.waitForExplicitFinish(); </script> </pre> <div id="log"> </div> </body> </html>