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Learning Dart

You're reading from   Learning Dart Dart is the programming language developed by Google that offers a new level of simple versatility. Learn all the essentials of Dart web development in this brilliant tutorial that takes you from beginner to pro.

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Product type Paperback
Published in Jan 2014
Publisher
ISBN-13 9781849697422
Length 388 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (14) Chapters Close

Preface 1. Dart – A Modern Web Programming Language 2. Getting to Work with Dart FREE CHAPTER 3. Structuring Code with Classes and Libraries 4. Modeling Web Applications with Model Concepts and Dartlero 5. Handling the DOM in a New Way 6. Combining HTML5 Forms with Dart 7. Building Games with HTML5 and Dart 8. Developing Business Applications with Polymer Web Components 9. Modeling More Complex Applications with Dartling 10. MVC Web and UI Frameworks in Dart – An Overview 11. Local Data and Client-Server Communication 12. Data-driven Web Applications with MySQL and MongoDB Index

Creating and removing elements

The structure of a web page is represented as a tree of nodes in the Document Object Model (DOM). A web page can start its life with an initial DOM tree, marked up in its HTML file, and then the tree can be changed using code; or, it can start off with an empty tree, which is then entirely created using code in the app, that is every element is created through a constructor and its properties are set in code. Elements are subclasses of Node; they take up a rectangular space on the web page (with a width and height). They have, at most, one parent Element in which they are enclosed and can contain a list of Elements—their children (you can check this with the function hasChildNodes() that returns a bool function). Furthermore, they can receive events. Elements must first be created before they can be added to the list of a parent element. Elements can also be removed from a node. When elements are added or removed, the DOM tree is changed and the browser...

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