Book Image

JavaScript and JSON Essentials - Second Edition

By : Bruno Joseph D'mello, Sai S Sriparasa
Book Image

JavaScript and JSON Essentials - Second Edition

By: Bruno Joseph D'mello, Sai S Sriparasa

Overview of this book

JSON is an established and standard format used to exchange data. This book shows how JSON plays different roles in full web development through examples. By the end of this book, you'll have a new perspective on providing solutions for your applications and handling their complexities. After establishing a strong basic foundation with JSON, you'll learn to build frontend apps by creating a carousel. Next, you'll learn to implement JSON with Angular 5, Node.js, template embedding, and composer.json in PHP. This book will also help you implement Hapi.js (known for its JSON-configurable architecture) for server-side scripting. You'll learn to implement JSON for real-time apps using Kafka, as well as how to implement JSON for a task runner, and for MongoDB BSON storage. The book ends with some case studies on JSON formats to help you sharpen your creativity by exploring futuristic JSON implementations. By the end of the book, you'll be up and running with all the essential features of JSON and JavaScript and able to build fast, scalable, and efficient web applications.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

JSON for storing application configurations


Prior to JSON becoming popular, configurations were either stored in a text file or in language-specific files, such as config.php for PHP, config.py for Python, and config.js for JavaScript. All these can now be replaced by a language-independent config.json file; use a JSON library for non-JavaScript libraries to parse it.

Configuration in PHP and Python

Let's take a quick look at an example config.json file:

In the config.json file, we store the metadata as a JSON object. We are specifying important information such as the project name, the environment of the project (which varies based on the server that the file is located on), any classes that have to be autoloaded during bootstrapping the application, and any classes or folders that we would want to exclude. Finally, using the RECURSIVE key, we also specify that there are folders and those folders have files.

Note

Bootstrapping is the startup process for an application, in which we prepare that...