Need help with JavaScript.

Question

So this is my code at present: https://code.sololearn.com/WEE9mZOZctgh/?ref=app

Is anyone able to answer me why the checkarray (line 34) is returning a zero length? I've tried switching the querySelectorAll command with getElementsByClassName with no success.

This is my second day on this issue now and I've googled/tried everything I can think of. Thanks in advance for your help.

As an aside: can anyone using SoloLearn on an iPad verify if they get any alert at all? iPhone: alert shows, iPad: nothing.

Answer 1

The answer is simple... You set wrong attribute.... class attr not exists in js element when you creating a new attribute for that object... Set the "className" attribute or if you want set a list of class for element "classList"

Answer 2

Great, thanks. It should have been span2.className = ...

Answer 3

I post a list of useful resources for learnand reference:

https://code.sololearn.com/WaVusr8J1KvK/?ref=app

Answer 4

That's a great list. Thanks for sharing!

Answer 5

👍👍👍

Answer 6

👍👍👍