Validate an email address

Question

How would I check that a user's email address ends in on of the three

@camel.com, @mel.com, @camelofegypt.com

This is my code so far, it just validates whether or not the user has provided any text

if ($.trim($("#email").val()).length === 0) {
alert('You must provide valid input');
return false;

I want to implement the email address validation into my code.

Refer this http://jquerybyexample.blogspot.com/2011/04/validate-email-address-using-jquery.html — Pandiyan Cool, Aug 08 '13 at 05:34
`^.*@.*mel.*\.com$` , if you are sure that the string contains only one email address. and there are no other domains which contains `mel` string. — Mr_Green, Aug 08 '13 at 05:43

SoWhat · Answer 1 · 2013-08-08T05:39:53.673

3

use the following regex:

var reg=/@(camel|mel|camelofegypt)\.com$/
 reg.test(email)

This only validates if you email ends in one of the three above. If you want ot know general email validation, search the web. There are tons of those

edited Aug 08 '13 at 05:39

answered Aug 08 '13 at 05:27

SoWhat

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more the .com to outside the grouping, it doesn't need to be repeated. Also you should check for valid characters before the `@` symbol. – abc123 Aug 08 '13 at 05:37

abc123 · Accepted Answer · 2013-08-09T04:31:45.013

As described in the library to regular expressions, it is difficult to truly validate an email address. However, the below taken from the above website will do a good job.

The official standard is known as RFC 2822. It describes the syntax that valid email addresses must adhere to. You can (but you shouldn't--read on) implement it with this regular expression:

(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])

Simple Regex:

\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b

Trade offs of validating email addresses:

Yes, there are a whole bunch of email addresses that my pet regex doesn't match. The most frequently quoted example are addresses on the .museum top level domain, which is longer than the 4 letters my regex allows for the top level domain. I accept this trade-off because the number of people using .museum email addresses is extremely low. I've never had a complaint that the order forms or newsletter subscription forms on the JGsoft websites refused a .museum address (which they would, since they use the above regex to validate the email address).

However, if you just want your specific domain this is definitely a possibility but it is not recommended to deny an email address because it fails these regular expressions.

Taking the above you could simply validate using the following Regex:

\b[A-Z0-9._%+-]+@(camel|mel|camelofegypt)\.com\b

or:

^[A-Z0-9._%+-]+@(camel|mel|camelofegypt)\.com$

The difference between these two regex are simple, the first regex will match an email address contained within a longer string. While the second regular expression will only match if the whole string is the email address.

JavaScript Regex:

/\b[A-Z0-9._%+-]+@(camel|mel|camelofegypt)\.com\b/i

or:

/^[A-Z0-9._%+-]+@(camel|mel|camelofegypt)\.com$/i

Special Note: You should likely allow for case insensitive with your regex using the i parameter since John@CAMEL.com is the same as john@camel.com. Which i've done in the above regex.

score 1 · Answer 3 · answered Aug 08 '13 at 06:08

function ValidateEmail(email) {
 var regex = /^([a-zA-Z0-9_\.\-\+])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  return regex.test(email);
}

OR

This is a regular-expression email validation comparison that will test a bunch of valid/invalid email address against the regex provided by you in the textarea below.

^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$

score 0 · Answer 4 · answered Aug 08 '13 at 05:32

0

Try out this javascript

function IsEmail(email) {
 var regex = /^([a-zA-Z0-9_\.\-\+])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  return regex.test(email);
}

answered Aug 08 '13 at 05:32

Pandiyan Cool

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score 0 · Answer 5 · answered Aug 08 '13 at 05:35

0

Try this function,

 function validateEmail($email) {
  var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
  if( !emailReg.test( $email ) ) {
   return false;
 } else {
  return true;
}
}


if( !validateEmail(email)) { /* do stuff here */ }

answered Aug 08 '13 at 05:35

Shijin TR

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score 0 · Answer 6 · answered Aug 08 '13 at 05:35

var x=$("#email").val();
var n=x.split("@");
if($.inArray(camel.com,n)!= -1)//checks if camel.com is there in your email address if not  the value will be -1 @is not given in front of camel.com because its split after @ which means that @will be present before it if camel.com is prescent.
  {
}                                   
else
if($.inArray(mel.com,n)!= -1)
{}
else
 if($.inArray(camelofegypth.com,n)!= -1)
{}
else
   alert("");

score 0 · Answer 7 · edited May 23 '17 at 11:45

using new regex

demo Here

added support for Address tags (+ sign)

function isValidEmailAddress(emailAddress) {
var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
return pattern.test(emailAddress);
};

Note : Keep in mind that no 100% regex email check exists

Validate an email address

7 Answers7

Taking the above you could simply validate using the following Regex: