Book Image

HTML5 Data and Services Cookbook

Book Image

HTML5 Data and Services Cookbook

Overview of this book

HTML5 is everywhere. From PCs to tablets to smartphones and even TVs, the web is the most ubiquitous application platform and information medium bar. Its becoming a first class citizen in established operating systems such as Microsoft Windows 8 as well as the primary platform of new operating systems such as Google Chrome OS. "HTML5 Data and Services Cookbook" contains over 100 recipes explaining how to utilize modern features and techniques when building websites or web applications. This book will help you to explore the full power of HTML5 - from number rounding to advanced graphics to real-time data binding. "HTML5 Data and Services Cookbook" starts with the display of text and related data. Then you will be guided through graphs and animated visualizations followed by input and input controls. Data serialization, validation and communication with the server as well as modern frameworks with advanced features like automatic data binding and server communication will also be covered in detail.This book covers a fast track into new libraries and features that are part of HTML5!
Table of Contents (21 chapters)
HTML5 Data and Services Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a bar chart


In contrast to a line chart, which is usually used to display averages or momentary values, bar charts are used to visualize data that belongs to discrete groups. Examples include daily, monthly, and weekly sales (the groups are days, months, and weeks respectively), page visits per user, fuel consumption for each car, and so on.

The Flot chart library can also draw bar charts. In this example, we're going to visualize the number of daily sales for the past seven days. We're also going to show the sales from separate products separately, stacked on top of each other.

Getting ready

We'll need to download Flot from the official website at http://www.flotcharts.org/ and extract the contents to a separate folder named flot.

How to do it...

Let's modify the line chart code to make it draw our bar charts.

  1. First, we're going to copy the same HTML page from the previous line chart recipe, but we'll make some changes. In order to draw stacking bars, we're going to need the stacking...