How do I concatenate a string with a variable?

Question

So I am trying to make a string out of a string and a passed variable(which is a number). How do I do that?

I have something like this:

function AddB         


        

Answer 1

In javascript the "+" operator is used to add numbers or to concatenate strings. if one of the operands is a string "+" concatenates, and if it is only numbers it adds them.

example:

1+2+3 == 6
"1"+2+3 == "123"