JavaScript adding integer values onto existing number

Question

I have a variable

var number = 1;

I'm then trying to add a 2 onto a number but not add them together like this.

1 + 2 = 2

but instead I want, to join 2 onto the number so i would get

12

Answer 1

You can use += and add 2 as string then again convert it to number

var number = 1;
number += '2';
console.log(Number(number));