Question:What are ExtJS Widgets?
These include components such as a messages box, grid, and window and everything else that serves a particular user interface. Example: Calendar, MsgBox, Grid Panel etc.
Question:What do the following files do in ExtJS?
a) Ext-all.css
b) Ext-base.js
c) Ext-all-debug.js/ext-all.js
a) Ext-all.css Ans: A style sheet file that controls the look and feel of Ext widgets. b) Ext-base.js Ans: This file provides the core functionality of Ext. c) Ext-all-debug.js/ext-all.js
Ans: All of the widgets live in this file. The debug version is used for development, and then swapped out for the non-debug version for production.
Question:What is localization? Write down three scenarios for localization that require three separate approaches.
The localization is the process of localizing native culture setting correctly according to the country and region such as language, date-time etc. There are three scenarios for localization that require three separate approaches in ExtJS: a) English only b) A single language other than English c) Multiple languages
Question:What is JSON? How does JSON work?
JSON (JavaScript Object Notation), is a lightweight text-based open standard designed for human-readable data interchange. It is derived from the JavaScript scripting language for representing simple data structures and associative arrays, called objects. Despite its relationship to JavaScript, it is language-independent, with parsers available for most languages.
Question:What is a config object in ExtJS? What to remember when working with a config object?
config objects are just ways of structuring data so that it can easily be read by programming languages. Here are some key thing to remember:
1.curly brackets warp around our whole record set.
2. Each record consists of a set of name/value pair.
3. The records values can contain any type of data.
4. Square brackets identify an array.