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We've covered a great deal of material so
far.

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And you're ready to write
a JavaScript feature on your own.

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Earlier, when you learned or
read about previous element sibling,

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you may have noticed that there's
also a next element sibling property.

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And it works in the way you'd expect.

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It returns the element immediately
following the referenced element.

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Now, I'd like to challenge you to use this
property to implement a down button for

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each list item just as we did
earlier with the up button.

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So in other words,

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the down button will move the item
one position downward in the list.

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This challenge is a great way to
practice what we've learned so far.

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And in the next video,
I'll show you how I implemented it.

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Good luck.