[Codewars] Summing a number's digits (7 kyu) / JavaScript

https://www.codewars.com/kata/52f3149496de55aded000410

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DESCRIPTION:

Write a function named sumDigits which takes a number as input and returns the sum of the absolute value of each of the number's decimal digits.

For example: (Input --> Output)

10 --> 1
99 --> 18
-32 --> 5

Let's assume that all numbers in the input will be integer values.

 

코드

function sumDigits(number) {
  return Math.abs(number).toString().split('').map(Number).reduce((a, b) => a + b, 0);
}