13 tasks, 1 challenge, 1 summary
We will learn how to control scrolling in the browser, and we will also find out more about equality operators and the logical operator AND. We will program a button that will return the use to the top of the page and create filtering for the news site.
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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>Scrolling and operators</h1><div class="chapter-description__content chapter-description__content--theory"><div class="chapter-description__left"><span class="chapter-description__info">
13 tasks, 1 challenge, 1 summary
</span><p class="chapter-description__text">We will learn how to control scrolling in the browser, and we will also find out more about equality operators and the logical operator AND. We will program a button that will return the use to the top of the page and create filtering for the news site.</p><div class="chapter-description__controls text-container"><a class="button button--green button--large button--wide" href="/continue/javascript-basics/scrolling-and-operators">
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-basics/scrolling-and-operators/onscroll-event-handler"><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. The onscroll event handler</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/pageyoffset-property"><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 pageYOffset property</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/show-button"><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. Show the “Up” button</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/scrollto-method"><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. The scrollTo method</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/scroll-page-onclick"><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. Scroll page on click</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/finish-button"><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. Finish working on the “Up” button</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/start-filtering"><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. Start filtering on the site</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/strict-equality-operator"><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. Strict equality operator</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/onchange-event-handler"><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 onchange event handler</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/add-class"><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. Add a class to news story from the selected category</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/strict-inequality-operator"><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. Strict inequality operator</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/showing-news"><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. Showing news from a selected category</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/logical-operator-and"><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 logical operator AND</span><span class="chapter-tasks__type">
Task
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/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">14. Summary of “Scrolling and operators”</span><span class="chapter-tasks__type">
Summary
</span></a></div><div class="chapter-tasks__item"><a class="chapter-tasks__link" href="/courses/javascript-basics/scrolling-and-operators/rate-site"><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">15. Test: Rate the site</span><span class="chapter-tasks__type">
Challenge
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