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It is a very simple function which uses a regular expression pattern match to test if a email is of a correct format. This takes in a parameter of the email address and then runs a pattern match against the regular expression.
Nothing exciting here except in line 6 where the on Click event is triggered when the user clicks on the button.
This event will launch the verify Email() Java Script function which will check the user input of the email address.
This is building on my previous post on how to use regular expressions with j Query. Update 12/05/13: Separated into versions for testing.
//reported to validate incorrectly: [email protected] as true /[A-Z0-9._% -] @[A-Z0-9-] .
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.
If the search() method returns a -1, then an alert would tell the user that an invalid email address has been entered and returns a false value.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.Lines 7-10 checks to see if the user has entered the same string in both email fields.This is done by a simple equality check on the string values.Date Validation Email Validation Phone Number Validation U. This is a code snippet for basic Java Script to validate email address using a regular expression.This Java Script demo verifies that an email address is in the correct format and that the user has typed in the same address in both fields to prevent mistyping of the address.I have borrowed the regex for verifying the correct email format from a different site. Please note that I have removed the action attribute because this is only a demo and we are only concerned with the client-side verification of the Java Script function.Visit Stack Exchange As I already noted in your other question, trying to validate email addresses correctly is an almost impossible task; there are a lot more characters allowed that you are assuming.Check out this correct regex to validate addresses, which is quite unpractical.