Validating when the user submits the form

(16 printed pages) Introduction Getting Started Writing the Validation Script Connecting the Form to the Script Associating Form Fields with Custom Script Code Listing Conclusion When you create forms, providing form validation is useful to ensure that your customers enter valid and complete data.

For example, you may want to ensure that someone inserts a valid e-mail address into a text box, or perhaps you want to ensure that someone fills in certain fields.

Lisa Wollin Microsoft Corporation May 2004 Applies to: Microsoft® Office Front Page® 2003 Microsoft Front Page 2002 Microsoft Front Page 2000 Summary: Learn how validate HTML form fields using Java Script in Microsoft Office Front Page 2003.

This article assumes a general understanding of HTML and Java Script.

You can then adapt this form to your own requirements.

Let's build a simple form with a validation script.

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In the example below, the attribute is added to the input field.

There are two main methods for validating forms: (usually done using Java Script).

Server-side validation is more secure but often more tricky to code, whereas client-side (Java Script) validation is easier to do and quicker too (the browser doesn't have to connect to the server to validate the form, so the user finds out instantly if they've missed out that required field! In this tutorial we'll build a simple form with client-side Java Script validation.

Before you ask, and someone always does, these examples will currently work in the following browsers: Safari 5, Chrome 6, Opera 9, Firefox 4 Beta and the i Phone/i Pad.

Also each browser has a slightly different default behaviour.

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