tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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MutationObserver-nested-crash.html (430B)

      1 <!DOCTYPE html>
      2 <meta charset=utf-8>
      3 <title>MutationObservers: observer inside another observer's callback</title>
      4 
      5 <div id="target"></div>
      6 <script>
      7  var observer = new MutationObserver(_ => {
      8    var otherObserver = new MutationObserver(_ => {});
      9    otherObserver.observe(target, {characterData: true});
     10  });
     11  observer.observe(target, {subtree: true, attributeOldValue: true});
     12  target.setAttribute("foo", "bar");
     13 </script>