Products Web Quizzing, animating, and canceling In this episode: Jake is bad at quizzes. NodeIterator and TreeWalker. New, exciting stuff in Safari. Firefox <select>. Animating height with performance. Fetch canceling. rss_feed Subscribe Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated March 1, 2017.