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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater

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 (17 chapters)
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JavaScript JSON Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Accepting JSON using Node.js


Different web server systems accept data posted by a client in different ways. That being said, in most cases, you read the data piecewise as it comes in from the client and once the POST request finishes, process it as a batch. Here's how to do it with Node.js.

How to do it...

In our case, we accept JSON submitted from the client via HTTP POST requests. To do this, we need to read the data from the client, aggregate it in a string, and when all of the data arrives at the server, convert the data from a JSON string to a JavaScript object. In json-encoder, js, we modify it to read as the following:

 // … beginning of script is the same as in the introduction
    if (req.method == 'POST') {
      console.log('POST');
      var body = '';
      req.on('data', function(data) {
        body += data;
      });
      req.on('end', function() {     
      var json = JSON.parse(body);
      json.result = 'OK';
      res.writeHead(200, 
        {'Content-Type': 'application...

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