Building an Ethereum DApp

Abstract

In the previous chapter we learned how to programmatically interact with Bitcoin and Ethereum blockchains using JavaScript. We also touched on how to create and deploy Ethereum smart contracts. In this chapter we will take our blockchain application programming to the next level by learning how to develop and deploy a DApp based on the Ethereum blockchain. As part of creating this DApp, we will be setting up a private Ethereum network and then we will use this network as the underlying blockchain for our DApp. This DApp will have its business logic in an Ethereum smart contract, and this logic will be executed using a web application connecting to private Ethereum network. This way, we intend to cover all aspects of Ethereum application development— from setting up nodes and networks, to creating and deploying a smart contract, to executing smart contract functions using client applications.