Division by 3

/* Write a JavaScript function divisionBy3(number) that finds the sum of digits of integer number n
(n > 9) and checks if the sum is divided by 3 without remainder. Write JS program divisionChecker.js
to check a few numbers. The result should be printed on the console
(“the number is divided by 3 without remainder” or “the number is not divided by 3 without remainder”). */

"user strict";

function divisionBy3(number) {
    if (number > 9) {
        var sum = 0;
        do {
            sum += number % 10;
            number = parseInt(number / 10);
        } while (number);

        if (!(sum % 3)) {
            console.log('the number is divided by 3 without remainder');
        } else {
            console.log('the number is not divided by 3 without remainder');
        }
    } else {
        console.error('Error! - The number must been bigger from 9!');
    }
}

divisionBy3(6);
divisionBy3(12);
divisionBy3(188);
divisionBy3(591);