Data
Reader small image

You're reading from  Blockchain for Enterprise

Product typeBook
Published inSep 2018
Reading LevelBeginner
PublisherPackt
ISBN-139781788479745
Edition1st Edition
Languages
Solidity
Tools
Ethereum.jsBlockchain
Concepts
Blockchain
Right arrow
Author (1)
Narayan Prusty
Narayan Prusty
author image
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.
Read more about Narayan Prusty

Right arrow

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-API.

Importing web3.js

Simply run npm install web3 inside your project directory to use web3.js in Node.js. In the source...

lock icon
The rest of the page is locked
Previous Page
Chapter 8 of 14, Page 2
Next Page
You have been reading a chapter from
Blockchain for Enterprise
Published in: Sep 2018Publisher: PacktISBN-13: 9781788479745
© 2018 Packt Publishing Limited All Rights Reserved

Author (1)

author image
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.
Read more about Narayan Prusty

Other recommended products

Related to this chapter

Building Blockchain Projects

Building Blockchain Projects

This is a project-based guide to teach you what Blockchain is, how it maintains data integrity, and how to create real-world Blockchain projects using Ethereum. With interesting real-world projects, you will know about bitcoin, generating smart and secure contracts with Ethereum, building end-to-end applications for Blockchain.

BookApr 2017266 pages
Solidity Programming Essentials

Solidity Programming Essentials

Solidity is a new contract-oriented programming language popular for creating smart contracts and distributed applications. Writing smart contracts targeting Ethereum and other blockchain platforms is an emerging skill. This book will enable you to write robust, secure, object-oriented contracts that extend blockchain with business functionality.

BookApr 2018222 pages
Ethereum Cookbook

Ethereum Cookbook

Ethereum is an open-source, public, Blockchain-based distributed computing platform, and operating system featuring smart contract functionality which builds decentralized applications. If you want to get started with Ethereum and Solidity or you are among the many developers already working with this platform, this book is your one-stop guide.

BookAug 2018404 pages
Mastering Blockchain Programming with Solidity

Mastering Blockchain Programming with Solidity

With this book, you will learn to write production-ready smart contracts for the Ethereum blockchain. Finally, with the help of comprehensive examples, you will learn how to add security to smart contracts and then delve into the various security considerations that must be paid attention to.

BookAug 2019486 pages
Learn Ethereum

Learn Ethereum

Learn Ethereum is ideal for anyone who wants to do an ultra-learning on Ethereum blockchain technology and build end-to-end decentralized applications using smart contract and Ethereum. The hands-on examples will help novices master blockchain and Ethereum in a quick, effective and easy way.

BookSep 2019540 pages
Foundations of Blockchain

Foundations of Blockchain

Blockchain technology is a combination of three popular concepts: cryptography, peer-to-peer networking, and game theory. This book is for anyone who wants to dive into blockchain from first principles and learn how decentralized applications and cryptocurrencies really work. Learn blockchain from first concepts to algorithms explained in Python.

BookJan 2019372 pages
Introduction to Blockchain and Ethereum

Introduction to Blockchain and Ethereum

Blockchain applications provide a single-shared ledger to eliminate trust issues involving multiple stakeholders. With the help of Introduction to Blockchain and Ethereum, you'll learn how to create distributed Blockchain applications which do not depend on a central server or datacenter. The course begins by explaining Bitcoin, Altcoins, and Ethereum, followed by taking you through distributed programming using the Solidity language on the Ethereum Blockchain. By the end of this course, you'll be able to write, compile, and deploy your own smart contracts to the Ethereum Blockchain.

BookSep 2018102 pages
Blockchain Quick Start Guide

Blockchain Quick Start Guide

Blockchain technology is giving birth to new business models, inspiring communities to build economies on a decentralized network. This book will be your practical guide to get you up and running with concepts of building your very own Blockchain network. You will get a thorough understanding of how a decentralized network is built and deployed.

BookDec 2018222 pages
Hands-On Blockchain for Python Developers

Hands-On Blockchain for Python Developers

This book is for Python developers to implement various components of end-to-end decentralized applications such as cryptocurrencies, smart contracts, wallet and more. You will use the example-based approach using various libraries from Python ecosystem to build efficient and powerful blockchain applications at work or projects.

BookFeb 2019450 pages
Ethereum Smart Contract Development

Ethereum Smart Contract Development

Ethereum is a public, blockchain-based distributed computing platform featuring smart contract functionality. In this book, you’ll learn about Ethereum and Smart Contracts, and we cover the Ethereum virtual machine (EVM) in detail. Then, you’ll get acquainted with DApps and DAOs and they how work. At the end of this book, we discuss Blockchain-as-a-Service, the dark web marketplace, and various advanced topics so you can get well-versed with the blockchain principles and the ecosystem.

BookFeb 2018288 pages
Blockchain Development for Finance Projects

Blockchain Development for Finance Projects

Blockchain technology will play a disruptive role in the banking and finance sector in the future. Experts estimate that it will save up to 20 billion dollars annually. You will build full-fledged financial applications using blockchain. It will aid you in building more secure and transparent workflows and re-engineering your business processes.

BookJan 2020530 pages
Blockchain By Example

Blockchain By Example

This book covers all the relevant concepts and phases of the blockchain development cycle. It will walk you through a step-by-step process to build three blockchain projects with differing complexity levels and hurdles. By the end of this book, you will be ready to tackle common issues in the blockchain ecosystem.

BookNov 2018528 pages

Personalised recommendations for you

Based on your interests and search pattern

Et al.

Et al.

Ever wonder why speech recognition systems don't understand the Scottish accent, or what would happen if an astronaut only ate mac 'n' cheese, or other spurious reflections you'd have at a bar? We did, then collated those deliberations into absurd research articles with fake figures and methodologies inspired by even more fictionally absurd studies.

BookAug 2023230 pages5
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages4
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages5
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages1
Generative AI with LangChain

Generative AI with LangChain

This book is a comprehensive introduction to LLMs and LangChain, demystifying the basic mechanics of LangChain, its functionalities, and the myriad of applications it can be integrated into.

BookDec 2023360 pages5
Mastering Tableau 2023

Mastering Tableau 2023

This book is a comprehensive resource to mastering your Tableau skills and becoming a BI expert. As you progress, you will learn how to build advanced dashboards and improve your storytelling to derive key business insight, as well as make you well-versed with advanced functionalities of Tableau in the business intelligence domain.

BookAug 2023684 pages
Building AI Applications with ChatGPT APIs

Building AI Applications with ChatGPT APIs

This guide covers all ChatGPT API features for effortless creation of robust AI powered apps. With its help, you’ll be able to leverage ChatGPT’s cutting-edge NLP models to take your app development skills to the next level. You’ll also work on ten exciting projects that will give you the practical know-how that you can apply to your existing applications.

BookSep 2023258 pages5
Building AI Applications with ChatGPT APIs

Building AI Applications with ChatGPT APIs

This guide covers all ChatGPT API features for effortless creation of robust AI powered apps. With its help, you’ll be able to leverage ChatGPT’s cutting-edge NLP models to take your app development skills to the next level. You’ll also work on ten exciting projects that will give you the practical know-how that you can apply to your existing applications.

BookSep 2023258 pages2
Data Engineering with AWS

Data Engineering with AWS

Embark on a journey to master data engineering pipelines on AWS! Our book offers a hands-on experience of AWS services for ingesting, transforming, and consuming data. Whether you're an absolute beginner or someone with basic data engineering experience, this guide is an indispensable resource.

BookOct 2023636 pages5
Modern Data Architecture on AWS

Modern Data Architecture on AWS

Every organization wants an agile, performant, and cost-effective data platform that meets all their current and future business needs. Purpose-built AWS analytics services and their features play a big part in building such a modern data platform. This book brings to you all the design and architectural patterns that’ll help you achieve this goal.

BookAug 2023420 pages5
Practical Guide to Applied Conformal Prediction in Python

Practical Guide to Applied Conformal Prediction in Python

Discover the power of Conformal Prediction with the "Practical Guide to Applied Conformal Prediction in Python." Master the latest techniques to quantify uncertainty in machine learning and computer vision models, and seamlessly apply them to your industry applications.

BookDec 2023240 pages
TinyML Cookbook

TinyML Cookbook

With over 70 project-based recipes, the TinyML Cookbook is a practical guide that will help you to get the most out of your microcontrollers. It provides a comprehensive understanding of the theoretical foundations while giving you hands-on experience training ML models for deployment on Arduino Nano 33 BLE Sense, Raspberry Pi Pico, and SparkFun RedBoard Artemis Nano microcontrollers.

BookNov 2023664 pages