Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Solution: Using nextElementSibling

Monika Frankowska
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Monika Frankowska
Full Stack JavaScript Techdegree Graduate 20,279 Points
Posted by Monika Frankowska
.a{fill-rule:evenodd;}techdegree seal-36
Monika Frankowska
Full Stack JavaScript Techdegree Graduate 20,279 Points

Working with nextSibling as a solution for inserting after the element

I've used 

ul.insertBefore(li, nextLi.nextSibling);

not 

ul.insertBefore(nextLi, li);

and the code is working fine. Is it ok to solve it this way?

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

Technically, it's equally effective as a solution, but it's a bit more complicated. Plus it relies on the new item being inserted at the end when "nextSibling" doesn't exist (and returns null). That could potentially confuse readers who are not intimately familiar with the operation of "insertBefore".