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Dinu Comendant
6,049 PointsWhy is it not explained?
Why in the first task of the challenge "Practice Selecting Elements" is given a challenge that it wasn't even explained here? In the challenge I was supposed to write document.querySelectorAll('nav a'); However, it's impossible to figure out that you need to add the "a", because it was never explained...
1 Answer
Jennifer Nordell
Treehouse TeacherHi there, Dinu Comendant! If you want to use the querySelectorAll() approach then you would need to understand CSS selectors. I see that by your profile, you don't yet have any points in CSS which would explain the source of the confusion. In the Teacher's Notes, you can find links to a course on CSS selectors and documentation. Because there are an infinite number of possible CSS selectors it would be impossible to show every combination.
That being said, there was another solution to this challenge that didn't involve querySelectorAll()
You could have also used the method shown several videos back and used that approach:
let navigationLinks = document.getElementsByTagName("nav")[0].getElementsByTagName("a");
This would get the first <nav> element and then from within that get all the <a> or "anchor" tags that define a link. There are multiple solutions to this problem. 
querySelectorAll("nav a"); but it is not the only answer.
Hope this helps!
