What is "2" + "2" - "2'" on JavaScript? Can I get explanation to it

Question

I've been having various questions on solving calculations on JavaScript. I'd need some help here

Answer 1

+ is both additional and concatenation in javascript so it concatenation if any one is not number.

But - meaning only subtraction

Therefore "2"+"2" = 22
22 - 2 = 20

Answer 2

丹ⓨㄩک廾 almost ^^

exactly "2" + "2" = "22"
"22" - "2" = Number("22") - Number("2") = 22 - 2 = 20

I guess you know that, but I think Onyeji Chiagozie Victor isn't necessary aware of implicit casting under the hood ;)