Book Image

jQuery 2.0 Animation Techniques: Beginner's Guide - Second Edition

Book Image

jQuery 2.0 Animation Techniques: Beginner's Guide - Second Edition

Overview of this book

jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML, and is the most popular JavaScript library in use today. Using the features offered by jQuery, developers are able to create dynamic web pages. jQuery empowers you with creating simple as well as complex animations. jQuery 2.0 Animation Techniques Beginner's Guide will teach you to understand animation in jQuery to produce slick and attractive interfaces that respond to your visitors' interactions. You will learn everything you need to know about creating engaging and effective web page animations using jQuery. In jQuery 2.0 Animation Techniques Beginner's Guide, each chapter starts with simple concepts that enable you to build, style, and code your way into creating beautifully engaging and interactive user interfaces. With the use of wide range of examples, this book will teach you how to create a range of animations, from subtle UI effects (such as form validation animation and image resizing) to completely custom plugins (such as image slideshows and parallax background animations). The book provides various examples that gradually build up your knowledge and practical experience in using the jQuery API to create stunning animations. The book uses many examples and explains how to create animations using an easy and step-by-step approach.
Table of Contents (18 chapters)
jQuery 2.0 Animation Techniques Beginner's Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Learning the HTMLCanvasElement interface


The HTMLCanvasElement interface exposes methods and properties allowing us to define and control the shapes that are drawn on the canvas. The HTMLCanvasElement interface can be broken down into distinct sections depending on what the methods do.

Using the canvas element

The <canvas> element itself has methods that can be called on it, including:

Method

Usage

getContext(a)

Returns an object (a CanvasRenderingContext2D object to be precise) which can then have other methods from the API called on it to manipulate the <canvas> element. The argument specifies the type of context to retrieve. Only two-dimensional contexts are available at present.

toDataURL()

Returns a data URL representing the image on the <canvas> element. Optional arguments include the type of image represented by the data URL (with the default being image/PNG), and any arguments specific to the type, such as the quality for image/JPG data URLs.

The <canvas&gt...