tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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getElementById-dynamic-001.html (973B)

      1 <!doctype html>
      2 <title>Shadow DOM: ShadowRoot.getElementById in shadow trees keeps working after host is removed from tree</title>
      3 <link rel="help" href="https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid">
      4 <link rel="help" href="https://bugzil.la/1475203">
      5 <link rel="author" name="Emilio Cobos Álvarez" href="emilio@crisal.io">
      6 <script src="/resources/testharness.js"></script>
      7 <script src="/resources/testharnessreport.js"></script>
      8 <div id="host"></div>
      9 <script>
     10 test(function() {
     11  let host = document.getElementById("host");
     12  host.attachShadow({ mode: "open" }).innerHTML = `<div id="test-id"></div>`;
     13 
     14  let element = host.shadowRoot.getElementById("test-id");
     15  assert_true(!!element);
     16 
     17  host.remove();
     18  assert_equals(host.shadowRoot.getElementById("test-id"), element);
     19 
     20  element.remove();
     21  assert_equals(host.shadowRoot.getElementById("test-id"), null);
     22 }, "ShadowRoot.getElementById keeps working after host has been removed");
     23 </script>