Why does substracting characters gives wrong answer

Question

If they concatenate

shouldn't be like:

a = "3"+"8"= "38"

b= "38"-"8"="3"

a="38"-"3"="8"

?

I also didn't understand why that solution doesn't work

where did the "0" come from ?

"_where did the "0" come from_" `'3' + '8' === '38'` -> `'38' - '8' === 30`. — Ivar, Aug 11 '20 at 13:32

score 1 · Answer 1 · answered Aug 11 '20 at 13:30

1

Operator - converts values to numbers and returns NaN if its not convertable

answered Aug 11 '20 at 13:30

Helios

score 0 · Answer 2 · answered Aug 11 '20 at 13:30

0

Substraction automatically converts to a number, where possible, before doing the operation.

answered Aug 11 '20 at 13:30

TKoL

2 Answers2