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.Since the form is placed inside a model which is not visible after loading page, the plugin might ignore the fields.
The first group can optionally be enclosed with parentheses, and the first two groups can optionally be followed with a choice of three separators (a hyphen, dot, or space). It’s important that the hyphen appears first in this character class, because if it appeared between other characters, it would create a range, as with .
So the submit button has a meaningful existance only within a form If, you want a plain simple button that triggers an event when the button is pressed/clicked, use the button tag with type=submit like this In this tutorial you will see how to use regular expressions to validate.
Through a list of examples , we will build a script to validate phone numbers , UK postal codes, along with more examples.
(For more information on how to create form validation using the Front Page form feature, see About creating forms in Front Page 2003.) However, if the form validation provided in Front Page does not suit your needs or the site on which you are working is hosted on a server that does not have Front Page Server Extensions from Microsoft installed, you may need to create custom form validation.
Note Front Page Server Extensions are a set of programs that provide access to special Front Page features, such as database processing, form processing, hit counters, and other built-in Front Page components that require server-side processing.