Learn Basic String and Array Methods by Building a Music Player - Step 38

JavaScript
1

The prompt states " Add an if statement to check whether the userData?.currentSong is falsy OR if userData?.currentSong.id is strictly not equal song.id."

I tried using

if(userData?.currentSong || userData?.currentSong.id !== song.id)

The solution wants me to use

if(userData?.currentSong **=== null** || userData?.currentSong.id !== song.id)

Why is this? From my understanding both should work. Is there some lesson that I am missing? Is it just simply that if userData?.currentSong isn’t set it will be null? If so why phrase it as “check whether the userData?.currentSong is falsy”?

Thanks!

2

hi and welcome to the forum:

For this instruction, you must recall that ‘falsy’ is anything that evaluates to false.
So userData?.currentSong will not evaluate to false if it set to a value.

For eg. you could have written !userData?.currentSong and that would have been accepted as well.

3

That’s a face palm moment. :stuck_out_tongue:
I think the lesson could be improved in some way by changing the hint for if someone does what I did.
Thank you for your reply!

4

I think it is best to make that suggestion on github where a developer can do something about it.
Please make your request here: GitHub Issues. Whenever reporting a bug, please check first that there isn’t already an issue for it and provide as much detail as possible.

5

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