How to Validate Email in Javascript

In this article, you will learn how to validate an email in Javascript.

Validate Email

In order to validate email, you can use the regular expression and test() method.

var a = "test@gmail.com";
var b = "test.example.com";
var c = "A@b@c@example.com";

function validateEmail(email) {

  // Regular expression for email search pattern
  var re = /^[^\s@]+@[^\s@]+$/;
  
  // If email's pattern is found in variable re
  if (re.test(email)) {
  	
    // Display valid email message
  	console.log(email + " is a valid email address");
  }
  
  // Else if email's pattern cannot be found in variable re
  else {
  
  	// Display invalid email message
  	console.log(email + " is an invalid email address");
  }
}

validateEmail(a);
// => "test@gmail.com is a valid email address"

validateEmail(b);
// => "test.example.com is an invalid email address"

validateEmail(c);
// => "A@b@c@example.com is an invalid email address"

Note: The regular expression is a sequence of characters used as a search pattern. The test() method functions by testing for a match in the supplied string.