Web3.Js Development Tutorials, Guides & Insights

  brew install libsodium

• Website: Libsodium

• Description: A smart contract testing framework for Ethereum, built on top of Ethers.js.
• Key Features:
• Advanced testing capabilities with concise syntax.
• Support for generating test smart contracts in Solidity.
• Easy integration with Hardhat.
• Generates comprehensive coverage reports.
• Website: Waffle

• Description: A web-based IDE for writing, testing, and deploying Solidity smart contracts.
• Key Features:
• Real-time Solidity compilation and error reporting.
• Integrated debugging tools and console.
• Supports testing and deploying contracts directly to Ethereum networks.
• Extensive plugin ecosystem for additional features.
• Website: Remix IDE

Decentralized applications (DApps) represent the future of software, leveraging blockchain technology to create applications that are transparent, secure, and free from centralized control. By combining smart contracts with a user interface, DApps offer a new way to interact with blockchain technology. In this tutorial, we will guide you through the process of building a DApp on the Ethereum blockchain. You’ll learn how to create a simple DApp, connect it to a smart contract, and deploy it on a test network.

A decentralized application (DApp) is an application that runs on a peer-to-peer network, like a blockchain, rather than relying on a single centralized server. DApps are open-source, operate autonomously, and the data is stored on the blockchain, making them transparent and resistant to censorship.

Update MyDapp.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract MyDapp {
    string public ipfsHash;

    event IPFSHashChanged(string newIPFSHash);

    function setIPFSHash(string memory newIPFSHash) public {
        ipfsHash = newIPFSHash;
        emit IPFSHashChanged(newIPFSHash);
    }

    function getIPFSHash() public view returns (string memory) {
        return ipfsHash;
    }
}

   mkdir solana-address-tracker
   cd solana-address-tracker

   npm init -y