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

Session and local storage


Cookies are a common way to save state from our application at the client side. This might be some checkboxes that were selected or some kind of temporary data, for example, current flow in a wizard app or even a session identifier.

This is a proven method for quite some time, but there are a few use cases where it is just uncomfortable to create cookies and they impose certain limits and overhead that can be avoided.

Session and local storage solve some of the issues with cookies and enable a simple storage of data on the client. In this recipe we will create a simple form that will take advantage of the HTML5 storage API.

Getting ready

In this recipe we will use several images that can be retrieved from the images folder or you can use your own selection. Additionally since we will use a simulated response from the REST API of a JSON object we need to start a local HTTP server that will serve our static files.

How to do it...

We can start off by creating a form that...