Book Image

Learn Blockchain Programming with JavaScript

By : Eric Traub
Book Image

Learn Blockchain Programming with JavaScript

By: Eric Traub

Overview of this book

Learn Blockchain Programming with JavaScript begins by giving you a clear understanding of what blockchain technology is. You’ll then set up an environment to build your very own blockchain and you’ll add various functionalities to it. By adding functionalities to your blockchain such as the ability to mine new blocks, create transactions, and secure your blockchain through a proof-of-work you’ll gain an in-depth understanding of how blockchain technology functions. As you make your way through the chapters, you’ll learn how to build an API server to interact with your blockchain and how to host your blockchain on a decentralized network. You’ll also build a consensus algorithm and use it to verify data and keep the entire blockchain network synchronized. In the concluding chapters, you’ll finish building your blockchain prototype and gain a thorough understanding of why blockchain technology is so secure and valuable. By the end of this book, you'll understand how decentralized blockchain networks function and why decentralization is such an important feature for securing a blockchain.
Table of Contents (10 chapters)

Installing Postman and body-parser

In this section, we're going to work on our environment to make our development process a little bit easier. The first thing that we're going to do is install a new package called nodemon. In our blockchain directory in our terminal, we will write the npm i nodemon --save command:

Whenever we make a change in one of our files and save it, this nodemon library will automatically restart our server for us so that we don't have to go back and forth from the terminal to our code to restart the server every time we make a change.

To use nodemon, we are going to open up our package.json file. Where it says "scripts", we're going to add a new script:

"name": "javaScript-blockchain",
"version": "1.0.0",
"description": "",
"main": "index.js&quot...