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  • Book Overview & Buying The JavaScript JSON Cookbook
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater, Brian Ritchie
1 (2)
Buy this Book
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater, Brian Ritchie
Buy this Book

Overview of this book

If you're writing applications that move structured data from one place to another, this book is for you. This is especially true if you've been using XML to do the job because it's entirely possible that you could do much of the same work with less code and less data overhead in JSON. While the book's chapters make some distinction between the client and server sides of an application, it doesn't matter if you're a frontend, backend, or full-stack developer. The principles behind using JSON apply to both the client and the server, and in fact, developers who understand both sides of the equation generally craft the best applications.
Table of Contents (12 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Sections
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Conventions
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Reader feedback
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Customer support
Free Chapter
1
1. Reading and Writing JSON on the Client
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1. Reading and Writing JSON on the Client
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Introduction
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Reading and writing JSON in JavaScript
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Reading and writing JSON in C++
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Reading and writing JSON in C#
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Reading and writing JSON in Java
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Reading and writing JSON in Perl
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Reading and writing JSON in Python
2
2. Reading and Writing JSON on the Server
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2. Reading and Writing JSON on the Server
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Reading and writing JSON in Clojure
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Reading and writing JSON in F#
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Reading and writing JSON with Node.js
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Reading and writing JSON in PHP
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Reading and writing JSON in Ruby
3
3. Using JSON in Simple AJAX Applications
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3. Using JSON in Simple AJAX Applications
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Introduction
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Creating an XMLHttpRequest object
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Making an asynchronous request for data
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Sending JSON to your web server
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Accepting JSON using Node.js
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Getting the progress of an asynchronous request
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Parsing the returned JSON
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Issuing a web service request using Node.js
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4. Using JSON in AJAX Applications with jQuery and AngularJS
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4. Using JSON in AJAX Applications with jQuery and AngularJS
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Introduction
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Adding a dependency to jQuery to your web page
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Requesting JSON content using jQuery
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Sending JSON to your web server using jQuery
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Getting the progress of a request using jQuery
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Parsing the returned JSON using jQuery
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Adding a dependency to AngularJS to your web page
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Requesting JSON content using AngularJS
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Sending JSON to your web server using AngularJS
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Getting the progress of a request using AngularJS
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Parsing the returned JSON using AngularJS
5
5. Using JSON with MongoDB
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5. Using JSON with MongoDB
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Introduction
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Setting up MongoDB
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Installing the MongoDB database driver for Node.js
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Installing the express module for Node.js
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Connecting to a MongoDB database using Node.js
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Creating a document in MongoDB using Node.js
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Searching for a document in MongoDB with Node.js
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Updating a document in MongoDB with Node.js
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Deleting a document in MongoDB using Node.js
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Using REST to search MongoDB
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Using REST to create a document in MongoDB
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Using REST to update a document in MongoDB
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Using REST to delete a document in MongoDB
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6. Using JSON with CouchDB
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6. Using JSON with CouchDB
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Introduction
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Installing and setting up CouchDB and Cradle
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Connecting to a CouchDB database using Node.js and Cradle
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Creating a CouchDB database using Node.js and Cradle
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Creating a document in CouchDB using Node.js and Cradle
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Setting up a data view in CouchDB with Node.js and Cradle
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Searching for a document in CouchDB with Node.js and Cradle
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Updating a document in CouchDB with Node.js and Cradle
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Deleting a document in CouchDB using Node.js and Cradle
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Using REST to enumerate CouchDB records
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Using REST to search CouchDB
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Using REST to upsert a document in CouchDB
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Using REST to delete a document in CouchDB
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7. Using JSON in a Type-safe Manner
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7. Using JSON in a Type-safe Manner
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Introduction
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How to deserialize an object using Json.NET
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How to handle date and time objects using Json.NET
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How to deserialize an object using gson for Java
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How to use TypeScript with Node.js
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How to annotate simple types using TypeScript
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How to declare interfaces using TypeScript
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How to declare classes with interfaces using TypeScript
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Using json2ts to generate TypeScript interfaces from your JSON
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8. Using JSON for Binary Data Transfer
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8. Using JSON for Binary Data Transfer
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Introduction
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Encoding binary data as a base64 string using Node.js
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Decoding binary data from a base64 string using Node.js
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Encoding and decoding binary data as a base64 string using JavaScript in the browser
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Encoding data as BSON using Json.NET
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Decoding data from BSON using Json.NET
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Using a DataView to access an ArrayBuffer
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Encoding and decoding base64 using an ArrayBuffer
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Compressing object-body content from a Node.js server built using the express module
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9. Querying JSON with JSONPath and LINQ
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9. Querying JSON with JSONPath and LINQ
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Introduction
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Using the JSONPath dot-notation to query JSON documents
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Using JSONPath bracket-notation to query JSON documents
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Using JSONPath scripting to construct more complicated queries
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Using JSONPath in your web application
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Using JSONPath in your Node.js application
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Using JSONPath in your PHP application
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Using JSONPath in your Python application
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Using JSONPath in your Java application
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Using JSONPath with SelectToken to query for JSONPath expressions in your C# application
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Using LINQ with Json.NET to query JSON in your C# application
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10. JSON on Mobile Platforms
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10. JSON on Mobile Platforms
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Introduction
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Parsing JSON on Android
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Generating JSON on Android
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Parsing JSON on iOS in Objective-C
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Generating JSON on iOS in Objective-C
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Parsing JSON on iOS using Swift
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Generating JSON on iOS using Swift
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Parsing JSON using Qt
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Generating JSON using Qt
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Index
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Index

Decoding binary data from a base64 string using Node.js

In Node.js, there's no inverse of Buffer.toString; instead, you pass the base64 data directly to the buffer constructor, along with a flag indicating that the data is base64 encoded.

Getting ready

If you want to run the example as it appears here, you'll need the buffertools module installed, in order to get the Buffer.compare method. To get that, run npm on a command prompt:

npm install buffertools

If all you're going to do is use the Buffer constructor of Node.js to decode base64 data, you don't need to do this.

How to do it…

Here, we'll take our original buffer and compare it to another one initialized with the original base64 for the first message:

require('buffertools').extend();

var buffer = new Buffer('Hello world');
var string = buffer.toString('base64');
console.log(string);

var another = new Buffer('SGVsbG8gd29ybGQ=', 'base64');
console.log(b.compare(another) == 0);

How it works…

The first line of the code includes the buffertools...

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