Super simple email validation with javascript

Question

I\'m making a really simple email validation script that basically just checks the following

1. that the email isn\'t blank
2. the the email contains an @ s

Answer 1

Based on Ian Christian Myers reply before this, this answer adds + sign and extend to tld with more than 4 chars

function validateEmail(email) {
    const regex = /^[a-zA-Z0-9.+_-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,15}$/;
    return regex.test(email);
}