It is quite easy to do form validations using that script.
The process is quite simple which we will see it in the following steps.
Validating form input with Java Script is easy to do and can save a lot of unnecessary calls to the server as all processing is handled by the web browser.
It can prevent people from leaving fields blank, from entering too little or too much or from using invalid characters.
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In this article, we will see some of the built-in validations supported by Dream Weaver.
The advantage is that you can add those validations right from Dream Weaver. With Spry validation widgets, you can verify the input in a text field, a check box, a text area, a group of radio buttons and even a pull-down(drop-down) menu.
Otherwise a browser with Java Script disabled, or a hacker trying to compromise your site, can easily submit invalid data. The first test in the example is therefore only necessary in order to provide a different error message when the input is blank.
The purpose of a form validation script is to return a boolean value ('s to reference form fields, but that can lead to namespace conflicts and why make things more complicated than necessary.