Node.js – Validate Email address using RegExp or Validator Package

function validateEmail(email) {
    // Regular expression for validating email addresses
    const regex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    return regex.test(email);
}

// Example usage
const email = 'example@email.com';
if (validateEmail(email)) {
    console.log('Valid email address');
} else {
    console.log('Invalid email address');
}

This function validateEmail uses a regular expression to check if the provided email address matches the pattern. However, keep in mind that this regex may not cover all edge cases of valid email addresses and might incorrectly reject some valid addresses or accept some invalid ones.

Alternatively, you can use npm libraries like validator or email-validator to perform email validation. Here’s how you can use the validator library:

First, install the validator package using npm:

$ npm install validator

Then, you can use it in your Node.js application:

const validator = require('validator');

function validateEmail(email) {
    return validator.isEmail(email);
}

// Example usage
const email = 'example@email.com';
if (validateEmail(email)) {
    console.log('Valid email address');
} else {
    console.log('Invalid email address');
}