javascript validation for email address

[PHPycho]

what is the javascript validation for the email address like
php.ycho@gmail.com

i used the simple validation like
"^\\w{1,}@\\w{1,}(\\.\\w{1,}){1,}$"
which works well for php@gmail.com but doesnot work for php.ycho@gmail.com
can anybody make a modification to above pattern to work for php.ycho@gmail.com
Thanks in advance to all of you

[webnoob]

just as a small note to remember that if the user has javascript turned off then the email address will not be validated, its better to use a server side language to do this.

[PHPycho]

Actually i dont have so much knowledge in regex....
and i have to do the work withing hour...and i thought forum is the best place..

Please help me in such case..
i appreciate for any help

[felgall]

I generally use

emailRe = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum))$/

which accepts the most commonly used formats of email addresses but doesn't cater for the following two styles of email address

"my email"@somewhere.com
me@[10.2.56.100]

I usually use the same expression in both Javascript and PHP.

[rusagar]

Try this one :

var goodEmail = form.txtemail.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);

if (!goodEmail)
{
alert("The Email address you entered is invalid please try again!")
form.txtemail.focus()
return (false);
}

[Mirek Komárek]

Your regexp not work for national domains, I use this one

^[_a-zA-Z0-9\.\-]+@[_a-zA-Z0-9\.\-]+\.[a-zA-Z]{2,4}$

but it will not works for museum, I didnt know that such domain exist.

[felgall]

museum is the longest of the current top level domain names - all of the others are 2, 3, or 4 characters with the 2 character ones being country specific (eg. .tv for Tuvala) and the others being the generic ones I included in my expression above.

[ceeb]

The regex I use is fairly generic:
/^.+@[a-z0-9]+([_\.\-]{0,1}[a-z0-9]+)*([\.]{1}[a-z0-9]+)+$/

As far as I'm aware, the name before the @ sign can be almost anything - even a single space character.