Decentralized application overview
A decentralized application (or DApp) is an application that uses smart contracts to run. Smart contracts are deployed on the Ethereum virtual machine (EVM). It is similar to a client-server low-tier architecture. A DApp can have a frontend (web) that makes calls to its backend (smart contract) through the web3.js API.
The following structure is what we are going to build for our crowdfunding DApp:
Strucuture of what we will be building for crowdfunding DApp
web3.js quick overview
web3.js is an Ethereum JavaScript API, that provides a collection of libraries to interact with a local or remote Ethereum network. The connection between web3js and Ethereum is made by using the HTTP or IPC protocol. In the following table, we quickly review a number of important web3.js API concepts:
API reference | Description | Example |
web3-eth | This package provides an API to interact with the Ethereum blockchain and smart contracts |
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