Book Image

Ext JS 3.0 Cookbook

Book Image

Ext JS 3.0 Cookbook

Overview of this book

Using Ext JS you can easily build desktop-style interfaces in your web applications. Over 400,000 developers are working smarter with Ext JS and yet most of them fail to exercise all of the features that this powerful JavaScript library has to offer. Get to grips with all of the features that you would expect with this quick and easy-to-follow Ext JS Cookbook. This book provides clear instructions for getting the most out of Ext JS with and offers many exercises to build impressive rich internet applications. This cookbook shows techniques and "patterns" for building particular interface styles and features in Ext JS. Pick what you want and move ahead. It teaches you how to use all of the Ext JS widgets and components smartly, through practical examples and exercises. Native and custom layouts, forms, grids, listviews, treeviews, charts, tab panels, menus, toolbars, and many more components are covered in a multitude of examples.The book also looks at best practices on data storage, application architecture, code organization, presenting recipes for improving themóour cookbook provides expert information for people working with Ext JS.
Table of Contents (15 chapters)
Ext JS 3.0 Cookbook
About the Author
About the Reviewer

Chapter 3. Load, Validate, and Submit Forms

You will learn the following recipes in this chapter:

  • Specifying the required fields in a form

  • Setting the minimum and maximum length allowed for a field's value

  • Changing the location where validation errors are displayed

  • Deferring field validation until form submission

  • Creating validation functions for URLs, email addresses, and other types of data

  • Confirming passwords and validating dates using relational field validation

  • Rounding up your validation strategy with server-side validation of form fields

  • Loading form data from the server

  • Serving the XML data to a form

  • Using forms for file uploads

  • Building friendlier forms using text hints


This chapter focuses on the topic of processing forms. The journey will include client-side and server-side field validation, form loading, submission, field customization, and layout techniques that will make it a breeze to build great-looking and friendly forms.