Validating form in javascript

Validating, in this case, does not mean that if John Doe types his name into the form field of a text box as Fred Doe the computer sends an alert to inform you that the data is untruthful.

No, we still do not have the capability to find out whether a statement is true.

It was a lot easier to understand the difference between these forms of validation when you coded Active Server Pages 3.0 because, as the programmer, you personally performed almost all data validation.

You yourself either programmed it to be client-side or server-side.

Nothing is more annoying to a user who is on a dial-up connection than clicking the Submit button on the form and then waiting for 20 seconds to find out that they didn't enter their password correctly.

The other option for form validation is to put some client-side Java Script or VBScript at the top of the ASP page that checks if the information in the fields is correct.

One of the most common elements of Web pages is a form in which the user can input data that is posted back to the server.

From there, you can compare user input in different fields or against values that might be held in other repositories, such as a database.

You can check for many types of information, as you learn in the rest of this article.

This paper introduces these new controls and discusses tips and tricks on working with them in practical scenarios.

(34 printed pages) Introduction Looking at Validation The Required Field Validator Control The Compare Validator Control The Range Validator Control The Regular Expression Validator Control The Custom Validator Control The Validation Summary Control Conclusion In your studies of ASP.

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