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

You could also use parseInt() or parseFloat(), like this:

> 1 + 2 + "3"
"33"
> 1 + 2 + parseInt(3)
6

I think that's alot cleaner than using +"3", but that is just my opinion.

Answer 2

In the example of 3 + 4 + "5" - the Javascript parser will do (3+4)+"5", as the 3+4 is first - so it will add 3 + 4 because they are numbers, then concatenate the string "5".