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Modulo

Another arithmetic operator is modulo. It calculates the remainder of a division and is represented by %.

let x = 7 % 2;
let y = 20 % 3;

7 divided by 2 is 3 with remainder 1. x is 1. 20 divided by 3 is 6 with remainder 2. y is 2.

Exercise

Write a function onesDigit that takes a natural number and returns the ones digit of that number.

Example: onesDigit(2674) should return 4.

+ Hint

function onesDigit(n) {
// Use modulo 10.
}

+ Solution

function onesDigit(n) {
  return n % 10;
}