Why does this expression return 2 in javaScript?

Question

I would think that you can get 0, perhaps, because the lines are turned on 1's, and the operator -calls the subtraction operation?

"1" - - "1";

Thanks in advance!

Answer 1

- prints a string to a number, and also acts as a minus sign.

1 - (-1)= 1 + 1=2

Answer 2

How math works

1 - (-1) = 1 + 1

Answer 3

1 - (-1) = 2. I do not see the problem? JavaScript will parse them as integers due to the minus sign, expecting math. This also happens if you multiply a number string by 1, otherwise the poor person is parseInt ().