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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater, Brian Ritchie
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater, Brian Ritchie

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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11
Index

Connecting to a MongoDB database using Node.js


Before your Node.js application can do anything with a MongoDB instance, it must connect to it over the network.

How to do it...

The Node.js drivers for MongoDB contain all of the necessary network code to establish and break connections with MongoDB running on your local or remote machine.

You need to include a reference to the native driver in your code and specify the URL of the database to connect to.

Here's a simple example that connects to the database and promptly disconnects:

var mongo = require('mongodb').MongoClient;

var url = 'mongodb://localhost:27017/test';

mongo.connect(url, function(error, db) {
  console.log("mongo.connect returned " + error);
  db.close();
});

Let's break this down line by line.

How it works…

The first line includes the native driver implementation for Mongo in your Node.js application, and extracts a reference to the MongoClient object it defines. This object contains the basic interface you need to interact with...

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