Book Image

HTML5 Web Application Development By Example : Beginner's guide

By : Jody Gustafson
Book Image

HTML5 Web Application Development By Example : Beginner's guide

By: Jody Gustafson

Overview of this book

HTML5's new features have made it a real application development platform with widespread adoption throughout the industry for this purpose. Being able to create one application that can run on virtually any device from phone to desktop has made it the first choice among developers. Although JavaScript has been around for a while now, it wasn't until the introduction of HTML5 that we have been able to create dynamic, feature-rich applications rivaling those written for the desktop. HTML5 Web Application Development By Example will give you the knowledge you need to build rich, interactive web applications from the ground up, incorporating the most popular HTML5 and CSS3 features available right now. This book is full of tips, tools, and example applications that will get you started writing your own applications today. HTML5 Web Application Development By Example shows you how to write web applications using the most popular HTML5 and CSS3 features. This book is a practical, hands-on guide with numerous real-world and relevant examples. You will learn how to use local storage to save an application's state and incorporate CSS3 to make it look great. You will also learn how to use custom data attributes to implement data binding. We'll use the new Canvas API to create a drawing application, then use the Audio API to create a virtual piano, before turning it all into a game. The time to start using HTML5 is now. And HTML5 Web Application Development by Example will give you the tips and know-how to get started.
Table of Contents (18 chapters)
HTML5 Web Application Development By Example Beginner's guide
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Chapter 6. Piano Man

"More than art, more than literature, music is universally accessible." – Billy Joel

In this chapter, we will learn how to use audio by creating a virtual piano application. First, we will learn about the HTML5 Audio element and API. Then we will create an audio manager to load audio files asynchronously and cache them for playback later. We will create a keyboard using HTML elements and style it using CSS.

We will learn the following in this chapter:

  • The HTML5 <audio> element and its attributes

  • How to use the Audio API to control audio in an application

  • How to dynamically load audio files

  • How to handle keyboard events to turn the computer keyboard into a piano keyboard

  • How to use a range input to control the volume of an audio element

  • How to check if the range input type is supported by your browser