Web3 Js Version - 4.4.0 (latest version)

What is web3js ?

Web3.js is a collection of libraries that allow developers to interact with a remote or local Ethereum node using HTTP, IPC, or WebSocket

Ethersjs is similar to web3js that is used for interaction with blockchain.

Installation

npm i web3

Web3 functionalities

Among the various functionalities of Web3.js, the below functions are the broadest modules that allow for interaction with the Ethereum ecosystem:

1. web3-eth :- is for the ethereum blockchain and smart contracts.
2. web3-shh :- is for the whisper protocol, to communicate p2p and broadcast.
3. web3-bzz :- is for the swarm protocol, the decentralized file storage.
4. web3-utils :- contains useful helper functions for Dapp developers.

We wil mostly be using :

1. web3-eth
2. web3-utils