1 00:00:00,270 --> 00:00:02,526 We've covered a great deal of material so far. 2 00:00:02,526 --> 00:00:05,910 And you're ready to write a JavaScript feature on your own. 3 00:00:05,910 --> 00:00:08,942 Earlier, when you learned or read about previous element sibling, 4 00:00:08,942 --> 00:00:12,201 you may have noticed that there's also a next element sibling property. 5 00:00:12,201 --> 00:00:14,290 And it works in the way you'd expect. 6 00:00:14,290 --> 00:00:18,480 It returns the element immediately following the referenced element. 7 00:00:18,480 --> 00:00:22,310 Now, I'd like to challenge you to use this property to implement a down button for 8 00:00:22,310 --> 00:00:25,440 each list item just as we did earlier with the up button. 9 00:00:25,440 --> 00:00:26,280 So in other words, 10 00:00:26,280 --> 00:00:30,600 the down button will move the item one position downward in the list. 11 00:00:30,600 --> 00:00:33,820 This challenge is a great way to practice what we've learned so far. 12 00:00:33,820 --> 00:00:36,590 And in the next video, I'll show you how I implemented it. 13 00:00:36,590 --> 00:00:37,090 Good luck.