<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=789315 --> <head> <meta charset="utf-8"> <title>Test for Bug 789315</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <script type="text/javascript"> (function() { const observerConfig = { childList: true, }; var observer = new MutationObserver(onMutations); observer.observe(document.head, observerConfig); function onMutations(mutations) { for (var i in mutations) { var mutation = mutations[i]; for (var j in mutation.addedNodes) { var addedNode = mutation.addedNodes[j]; addedNode.mutationObserverHasNotified = true; } } } })(); </script> <link id="testnode" rel="localization" href="dummy"></link> <script type="text/javascript"> var testNode = document.getElementById("testnode"); ok(testNode.mutationObserverHasNotified); </script> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=789315">Mozilla Bug 789315</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> </pre> </body> </html>