JavaScript:实现返回格式化的电话号码的字符串算法
/**
* @description - function that takes 10 digits and returns a string of the formatted phone number e.g.: 1234567890 -> (123) 456-7890
* @param {string} phoneNumber
* @returns {string} - Format to (XXX) XXX-XXXX pattern
*/
const formatPhoneNumber = (phoneNumber) => {
if (