Book Image

Sencha Touch Cookbook

By : Ajit Kumar
Book Image

Sencha Touch Cookbook

By: Ajit Kumar

Overview of this book

Sencha touch is a versatile HTML5-based framework for developing mobile web apps that look and feel native on touch screen devices, and with it you can write your code once and deploy it to both iOS and Android saving you both time and money. The Sencha touch cookbook has a comprehensive selection of recipes covering everything from installation right through to HTML5 geo location. The Sencha Touch Cookbook really is your one stop resource for cross platform HTML5 application development. It covers the basics such as setting up an iOS and Android development environment right through to much more complex development issues such as touch gestures, animation, rich media and geo location. Every recipe is practically focused. Maximum action. Minimum theory.
Table of Contents (17 chapters)
Sencha Touch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Extending an existing component capability


In the previous recipe, we defined a new component and used it in our application. However, in some cases, the choice may not be to define a new component. Rather, we may have to see if we can add a capability to the existing component. For example, String is a standard object in JavaScript and we would like to add a new method—formatWithWordBreak —so that once it is added, it is available to the complete application code to make use of this new method without defining a MyString class and using it wherever we need formatWithWordBreak. This recipe will take us through the steps to achieve this requirement.

Getting ready

Make sure that you have set up your development environment by following the recipes outlined in Chapter 1.

How to do it...

Carry out the following steps:

  1. Create and open a new file named ch06_13.js and paste the following code in it:

    Touch.book.ux.PhotoAlbum.prototype.loadData = function(data) {
       this.store.loadData(data);
    };
    
    Ext.setup...