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

Positioning components in multiple columns

Multicolumn layouts are pervasive today. They are a favorite choice when there is a need to display complex data, or to have an organized and easy-to-navigate GUI. This recipe explains how to set up this type of layout with Ext JS, as shown in the following screenshot:

How to do it...

  1. 1. Create the columns of your layout:

    var column1={
    title: 'Column 1',
    columnWidth: .3,
    html: 'Width=30%'
    var column2={
    xtype: 'panel',
    title: 'Column 2',
    columnWidth: .5,
    html: 'Width=50%'
    var column3={
    xtype: 'panel',
    title: 'Column 3',
    width: 200,
    html: 'Width=200px'
  2. 2. Position the columns in a container that uses the column layout:

    var container=new Ext.Viewport({
    layout: 'column',
    defaults: {
    bodyStyle: 'padding:10px'
    }, items: [column1, column2, column3]

How it works...

Building a column layout requires you to create the panels that will constitute the columns. These columns are then added to a container that uses ColumnLayout. (Note the...