Verify if number is a common factor of an array of Numbers

commonFactorInArray.js

function isCommonFactorOf(arrayOfNumbers, factor) {
	var numbers = arrayOfNumbers;
	var length = numbers.length;

	var minor = 0;
	for (let i=0; i < length; i++) {
		let number = numbers[i];
		if (i===0 || number < minor) {
			minor = number;
			if (factor > minor) {
				return false; // if factor > anyNumberInArray --> is not a common factor;
			}
		}
	}
	
	let isFactor = true;
	let iterator = 0;
	while (isFactor === true && iterator < length) {
		let number = numbers[iterator];
		let result = number % factor === 0;
		if (!result) {
			isFactor = false;
		}
		iterator++;
	}
	
	return isFactor ? true : false;
}