Sencha Touch Interview Preparation Guide

Sencha Touch is a user interface (UI) JavaScript library, or framework, specifically built for the Mobile Web. It can be used by Web developers to develop user interfaces for mobile web applications that look and feel like native applications on supported mobile devices. It is fully based on web standards such as HTML5, CSS3 and JavaScript. Sencha Touch aims to enable developers to quickly and easily create HTML5 based mobile apps that work on Android, iOS, Windows, Tizen and BlackBerry devices, and produce a native-app-like experience inside a browser.

Sencha Touch includes a set of graphical user interface GUI-based controls (or components) for use within mobile web applications. These components are optimized for touch input. The components are: buttons with device specific themes and effects; form elements such as text fields for email, date picker, and address; sliders, selectors, and combo-boxes; a list component with momentum-scrolling and an index bar; a minimal icon set; toolbars and menus; movable tabs; bottom toolbars; and a map component with support for multi-touch gestures such as pinch and zoom.

All the components can be themed according to the target device. This is done using Sass, a stylesheet language built over CSS.

Sencha Touch has eight in-built transition effects including slide over or under the current element, pop, flip, and cube. It supports common touch gestures built from touch events, which are Web standards but supported only by Android, iOS, and some touch enabled devices. These are tap, double tap, swipe, scroll, and pinch.

The GNU General Public License(GPL) is the most widely used free and open source software (FOSS) license in the world. The GPL was created and sponsored by the Free Software Foundation (FSF)

Networking Support:

1. HTTP
2. GPS (location-based web services and accelerometer input)

Data Integration

1. AJAX
2. JSONP
3. YQL

Saving data offline with local Storage writers

GUI Support:

Easily scales to different resolutions for maximum compatibility with different iPhone, iPad, and the various Android phones.
HTML5 and CSS3 allow higher flexibility.
Great support for animations and enhanced touch events

Audio Video Support:

Provides HTML5 to deliver components like audio and video, as well as a local Storage proxy for saving data offline. Provides CSS3 style sheets for robust styling layer possible.
Provides a simple Container for HTML5 Video

Yes

Distribution of a Sencha Touch application through a general purpose browser, regardless of the device, is free of charge an embedded license is not required. A general purpose web browser has a URL bar and a general browser "Chrome".

It's used HTML 5, CSS3 and JavaScript.