Introduction to libphonenumber-js

libphonenumber-js is a powerful library for parsing, formatting, and validating international phone numbers. It provides a variety of useful APIs to handle phone number operations efficiently. In this article, we will explore numerous API examples along with a sample application to demonstrate the functionality of libphonenumber-js.

1. Parsing Phone Numbers

Use the parsePhoneNumber method to parse a phone number string into an object containing detailed information.

 import { parsePhoneNumber } from 'libphonenumber-js';
const phoneNumber = parsePhoneNumber('+12133734253'); console.log(phoneNumber.country); // US console.log(phoneNumber.number); // +12133734253 

2. Formatting Phone Numbers

The format method helps in formatting a phone number into various international formats.

 import { format } from 'libphonenumber-js';
const formattedNumber = format('+12133734253', 'INTERNATIONAL'); console.log(formattedNumber); // +1 213 373 4253 

3. Validating Phone Numbers

Validate phone numbers using the isValidNumber method.

 import { isValidNumber } from 'libphonenumber-js';
const isValid = isValidNumber('+12133734253'); console.log(isValid); // true 

4. Getting Country from Phone Number

Get the country of the phone number using the getCountryCallingCode method.

 import { getCountryCallingCode } from 'libphonenumber-js';
const countryCode = getCountryCallingCode('US'); console.log(countryCode); // 1 

5. Detecting Number Type

Determine the type of phone number using the getType method.

 import { getType } from 'libphonenumber-js';
const numberType = getType('+12133734253'); console.log(numberType); // 'FIXED_LINE_OR_MOBILE' 

Sample Application

Below is a sample application that demonstrates the usage of various libphonenumber-js APIs.

 import { parsePhoneNumber, format, isValidNumber, getCountryCallingCode, getType } from 'libphonenumber-js';
const phoneNumber = '+12133734253';
const parsedNumber = parsePhoneNumber(phoneNumber); console.log('Parsed Number:', parsedNumber);
const formattedNumber = format(phoneNumber, 'INTERNATIONAL'); console.log('Formatted Number:', formattedNumber);
const isValid = isValidNumber(phoneNumber); console.log('Is Valid:', isValid);
const countryCode = getCountryCallingCode(parsedNumber.country); console.log('Country Code:', countryCode);
const numberType = getType(phoneNumber); console.log('Number Type:', numberType); 

In this sample application, we parse a phone number, format it, verify its validity, fetch the country calling code, and determine the number type using various methods provided by the libphonenumber-js library.

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