How to change a negative number to positive?

Question

How to make a negative number to be positive (ie. -25 to be 25) in JavaScript?

Answer 1

There are various ways:

var m, n = -25;
m = -1 * n;
m = -n;
m = Math.abs(n);

Answer 2

use Math.abs function

Answer 3

var n= -25;
var m= -1 * n;