21 task, 1 challenge, 1 summary
We will find out what the DOM API is, work with templates, receive an overview of new events and methods for managing DOM, and figure out how to clone elements and program a to-do list app.
2026-03-09 14:11
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</span></span></li></ol></aside></div><div class="page-content__right"><div class="chapter-description"><h1 class="chapter-description__title"><span>Chapter 3: </span>Working with DOM</h1><div class="chapter-description__content chapter-description__content--theory"><div class="chapter-description__left"><span class="chapter-description__info">
21 task, 1 challenge, 1 summary
</span><p class="chapter-description__text">We will find out what the DOM API is, work with templates, receive an overview of new events and methods for managing DOM, and figure out how to clone elements and program a to-do list app.</p><div class="chapter-description__controls text-container"><a class="button button--green button--large button--wide" href="/continue/javascript-browser/dom">
Start </a><br><span class="chapter-description__controls-text"></span></div></div><div class="chapter-tasks"><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/to-do-list"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">1. What are you planning to do?</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/change-event"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">2. The “change” event</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/change-event-2"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">3. How the “change” event works</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/delete-element"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">4. Deleting the element from the list</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/check-collection-length"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">5. How to check the collection length</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/debug-code"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">6. Debugging the code</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/static-live-collection"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">7. Static and live collections</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/display-message"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">8. Displaying the message on the page</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/submit-event"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">9. The “submit” event</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/cancel-form-submit"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">10. Cancelling the form submission</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/obtain-text-input"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">11. How to obtain text from the input field</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/template-tag"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">12. Templates and the <template> tag</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/document-fragment"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">13. The contents of the <template> tag, document-fragment</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/clone-element"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">14. Cloning and inserting elements, part 1</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/clone-element-2"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">15. Cloning and inserting elements, part 2</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/clone-element-3"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">16. Cloning and inserting elements, part 3</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/clone-element-4"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">17. Cloning and inserting elements, part 4</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/clone-element-5"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">18. How to clone elements</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/add-new-element"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">19. Adding a new element to a list</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/delete-new-task"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">20. Deleting a new task in the list</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/clear-input"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_arrow"></use></svg></span><span class="chapter-tasks__title">21. Clearing the input field</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/summary"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_synopsis"></use></svg></span><span class="chapter-tasks__title">22. Summary of “Actions with DOM”</span><span class="chapter-tasks__type">
Summary
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-browser/dom/instant-messanger"><span class="chapter-tasks__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#chapter_shield"></use></svg></span><span class="chapter-tasks__title">23. The third program: “Instant messenger”</span><span class="chapter-tasks__type">
Challenge
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