In this page we have discussed how to validate an email using Java Script : An email is a string (a subset of ASCII characters) separated into two parts by @ symbol.
a "personal_info" and a domain, that is [email protected] The length of the personal_info part may be up to 64 characters long and domain name may be up to 253 characters. The personal_info part contains the following ASCII characters.
Any support for use of regex checks for e-mails I am 100% against.
I'm tired of being told my e-mail address of "foo [email protected]" is invalid.
The best option is to ask the user to type their e-mail in twice and if you MUST use a regex checker, then tell the user that their e-mail address does not appear to be valid and ask if they are sure they typed it right.
Even go so far as to point out WHAT did not check out in the regexp check, but do NOT stop them from submitting the form.
To get a valid email id we use a regular expression /^\w ([\.-]?
~ characters are legal in the local part of an e-mail address but in the above regular expression those characters are filtered out. It begins with at least one or more word characters including the underscore, equivalent to [A-Za-z0-9_].
Here is the code for the verify Email() function: This function will return a false value if the user does not type in an email address in the correct format or if the user fails to type in the same email address in both fields.
If the email addresses passes both these tests, then the function will return a true value.
This method accepts regex expressions as arguments to check the string and returns the position of the specified value in the string or a -1 if no match was found.