For this reason, client form validation can be faster than server-side validation.However, client-side validation may not work in all instances.However, for some form functions, server-side validation is necessary.For example, if you have a form that populates a drop-down list based on the value of another form field, server-side processing may be needed to pull data from a database and populate the drop-down list.This article explains how to provide client-side validation for forms that you create either by hand or by using the form tools within Front Page.In addition, this article assumes a general understanding of HTML and Java Script, although a thorough understanding is not required.
Important JScript is Microsoft's implementation of ECMAScript, as defined by the specification of the European Computer Manufacturers Association.
You may assign any name you want that is composed of alphanumeric characters (without spaces), but to make writing the code easiest, you should provide a useful, friendly name for each of the fields.
In addition, each of the fields should have a unique name.
(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.
Both Java Script and JScript are ECMAScript-compliant languages.