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Mastering Blockchain - Fourth Edition

You're reading from Mastering Blockchain - Fourth Edition

Product type Book

Published in Mar 2023

Publisher Packt

ISBN-13 9781803241067

Pages 818 pages

Edition 4th Edition

Languages

Concepts

Author (1):

Imran Bashir

Table of Contents (24) Chapters

Preface

1. Blockchain 101

2. Decentralization

3. Symmetric Cryptography

4. Asymmetric Cryptography

5. Consensus Algorithms

6. Bitcoin Architecture

7. Bitcoin in Practice

8. Smart Contracts

9. Ethereum Architecture

10. Ethereum in Practice

11. Tools, Languages, and Frameworks for Ethereum Developers

12. Web3 Development Using Ethereum

13. The Merge and Beyond

14. Hyperledger

15. Tokenization

16. Enterprise Blockchain

17. Scalability

18. Blockchain Privacy

19. Blockchain Security

20. Decentralized Identity

21. Decentralized Finance

22. Blockchain Applications and What’s Next

23. Index

Interacting with contracts via frontends

It is desirable to interact with the contracts in a user-friendly manner via a webpage. It is possible to interact with the contracts using the web3.js library from HTML-/JS-/CSS-based webpages.

The HTML and JavaScript frontend

The HTML content can be served using any HTTP web server, whereas web3.js can connect via local RPC to the running Ethereum client (geth) and provide an interface to the contracts on the blockchain. This architecture can be visualized in the following diagram:

Figure 15.2: web3.js, frontend, and blockchain interaction architecture

If web3.js is not JavaScript frontend already installed, use these steps; otherwise, move on to the next section, Interacting with contracts via a web frontend.

Installing Web3.js JavaScript library

Web3, which we discussed earlier in this chapter, was looked at in the context of the Web3 API exposed by geth. In this section, we will introduce the Web3 JavaScript library (web3.js), which is...

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Authors (1)

Imran Bashir

Imran Bashir has an M.Sc. in Information Security from Royal Holloway, University of London, and has a background in software development, solution architecture, infrastructure management, and IT service management. He is also a member of the Institute of Electrical and Electronics Engineers (IEEE) and the British Computer Society (BCS). Imran has extensive experience in both the public and financial sectors, having worked on large-scale IT projects in the public sector before moving to the financial services industry. Since then, he has worked in various technical roles for different financial companies in Europe's financial capital, London.

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