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HTML5 Data and Services Cookbook

You're reading from   HTML5 Data and Services Cookbook Take the fast track to the rapidly growing world of HTML5 data and services with this brilliantly practical cookbook. Whether building websites or web applications, this is the handbook you need to master HTML5.

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Product type Paperback
Published in Sep 2013
Publisher Packt
ISBN-13 9781783559282
Length 480 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (21) Chapters Close

HTML5 Data and Services Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Display of Textual Data 2. Display of Graphical Data FREE CHAPTER 3. Animated Data Display 4. Using HTML5 Input Components 5. Custom Input Components 6. Data Validation 7. Data Serialization 8. Communicating with Servers 9. Client-side Templates 10. Data Binding Frameworks 11. Data Storage 12. Multimedia Installing Node.js and Using npm Community and Resources Index

Serializing binary data into JSON


When working with REST API's if you need to include binary data as part of the JSON, then one of the simplest ways is to use base64. Images and similar resources should most likely exist as separate resources but they can also be part of the JSON document as well. In this recipe, we are going to cover a simple example of including image in JSON document.

How to do it...

We will generate some binary data from a canvas element and serialize it to JSON:

  1. We start by creating an HTML file, where we can place a simple canvas, a div element for output, and includes jQuery together with the script will be created afterwards:

    <!doctype html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>Binary data to json</title>
        <style type="text/css">
          div {
            word-wrap: break-word;
          }
        </style>
      </head>
      <body>
        <canvas id="myCanvas" width="75" height="75"></canvas>
        &lt...
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