You're reading from Blockchain for Enterprise Build scalable blockchain applications with privacy, interoperability, and permissioned features

Product type Paperback

Published in Sep 2018

Publisher Packt

ISBN-13 9781788479745

Length 220 pages

Edition 1st Edition

Languages

Solidity

Tools

Blockchain

Concepts

Blockchain

Author (1):

Narayan Prusty

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Table of Contents (10) Chapters

Preface

1. What are Decentralized Applications? FREE CHAPTER

2. Building Blockchain Using Quorum

3. Writing Smart Contracts

4. Getting Started with web3.js

5. Building Interoperable Blockchains

6. Building Quorum as a Service Platform

7. Building a DApp for Digitizing Medical Records

8. Building a Payment Solution for Banks

9. Other Books You May Enjoy

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Introduction to web3.js

web3.js provides us with JavaScript APIs to communicate with geth. It uses JSON-RPC internally to communicate with geth. web3.js can also communicate with any other kind of Ethereum node that supports JSON-RPC. It exposes all JSON-RPC APIs as JavaScript APIs. It doesn't just support all the Ethereum-related APIs, but also supports APIs related to Whisper and Swarm.

As we build various projects, you will keep learning more about web3.js. For now, though, let's go through some of the most used APIs for web3.js. Later, we will build a frontend for our ownership smart contract using web3.js.

At the time of writing, the latest version of web3.js is 1.0.0-beta.18. We will learn everything using this version.

web3.js is hosted at https://github.com/ethereum/web3.js and the complete documentation is hosted at https://github.com/ethereum/wiki/wiki/JavaScript...

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Authors (1)

Narayan Prusty

Narayan Prusty is a full-stack developer. He works as a consultant for various start-ups around the world. He has worked on various technologies and programming languages but is very passionate about JavaScript, WordPress, Ethereum, Solr, React, Cordova, MongoDB, and AWS. Apart from consulting for various start-ups, he also runs a blog titled QNimate and a video tutorial site titled QScutter, where he shares information about a lot of the technologies he works on.

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