JavaScript adding a string to a number

Question

I was reading the re-introduction to JavaScript on MDN and in the section Numbers it said that you can convert a string to a number simply by adding a plus operator

Answer 1

It is confusing, but binary + seems to be a rare case of a number being coerced to a string. In most cases it would be the other way round (so it's very easy to think that you don't need to be too fussy about the type)

4+"3" = "43"

4-"3" = 1