Number Checker

/* Write a JavaScript function printNumbers(number) that accepts as parameter an integer number.
The function finds all integer numbers from 1 to n that are not divisible by 4 or by 5.
Write a JS program numberChecker.js that invokes your function with the sample input data below
and prints the output at the console. */

"use strict";

function printNumbers(number) {
    var resultStr = '';
    for (var i = 0; i <= number; i += 1) {
        if ((i % 4 != 0) && (i % 5 != 0)) {
            resultStr = resultStr.concat(i.toString(10)).concat(', ');
        }
    }

    if (resultStr.length == 0) console.log('no');
    else console.log(resultStr);
}

printNumbers(5);
printNumbers(20);
printNumbers(-5);
printNumbers(13);
printNumbers('x');