fromat-phone.js

/*!
 * description: Format Phone Numbers
 * Output: (+XXX) XXX-XXXXXX => (+212) 671-415075
 * @phone
 */
function formatPhone(phoneNumber, format) {

  // Replace X by each number on a specific position
	for (let i = 0, l = phoneNumber.length; i < l; i++) {
		format = format.replace(
			"X",
			phoneNumber[i],
		);
	}

	return format;
}

// Test using an array
const num = [2,1,2,6,7,1,4,1,5,0,7,5];
console.log(formatPhone(num, "(+XXX) XXX-XXXXXX"));

// Test using a String
const num2 = "212671415075";
console.log(formatPhone(num2, "(+XXX) XXX-XXXXXX"));