The Metana Blog

Guides, tutorials & career tips.

Expert-written guides on Full-Stack Development, Web3, AI, Data, and Cybersecurity — built for aspiring engineers and tech professionals ready to level up.

Full-Stack

Functions in JavaScript

Functions are the foundation of well-structured, maintainable, and scalable JavaScript code. They encapsulate a specific task, promoting code reusability and fostering modular programming practices. This article dives…

Metana EditorialApril 17, 2024Read

Full-Stack

JavaScript Variables

Variables are the fundamental building blocks of any programming language. They act as named containers that store data, allowing us to manipulate and reference that data throughout our code. In JavaScript, variables…

Metana EditorialApril 11, 2024Read

Blockchain

Easy Guide to Solidity and IPFS Integration: Improving Blockchain Apps

The world of blockchain technology is full of new and exciting ideas. Blockchains are great because they are very secure and can't be easily changed, but they don't have a lot of space to store information. That's where…

Metana EditorialApril 10, 2024Read

Blockchain

Understanding Chainlink and Solidity Integration for Better dApp Development

Blockchain technology is really innovative, and smart contracts are a big part of that. Smart contracts are like automatic agreements that run themselves, but they have a problem: they can't interact with the outside…

Metana EditorialApril 9, 2024Read

Full-Stack

How JavaScript Works? All You Need to Know

JavaScript (JS) is the most common language used to make websites interactive. From the tiny animations that grab your attention to the complex applications running seamlessly in your browser, JavaScript plays a huge…

Metana EditorialApril 4, 2024Read

Blockchain

Implementing Oracles in Solidity: Enhance Contract Reliability

Solidity, the programming language for Ethereum smart contracts, excels at automating tasks and enforcing complex logic within the secure confines of the blockchain. However, smart contracts by themselves operate in a…

Metana EditorialApril 4, 2024Read

Blockchain

NFT Marketplace Development with Solidity: Essential Guide

TL;DR: Solidity is essential for building robust NFT marketplaces on the Ethereum blockchain. Key marketplace features include NFT listing, buying/selling, user management, security measures, and search functionalities.…

Metana EditorialApril 3, 2024Read

Ethernaut Walkthrough

Ethernaut Level 3 Walkthrough: Coin Flip

The Ethernaut Level 3 , called "Coin Flip," is a lesson on the weak spots in how smart contracts handle chance and prediction. This article walks you through the Coin Flip game, showing where the contract has a weak…

Sven DaneelApril 2, 2024Read

Blockchain

What is Event Handling in Web3.js? [Explained]

The world of blockchain technology develops on real-time communication and transparency. Smart contracts, the self-executing programs on blockchains, play a significant role in this dynamic environment. They can emit…

Metana EditorialApril 1, 2024Read

Blockchain

How to Send Ethereum Transactions Using Web3.js

TL;DR: Web3.js Basics: Use Web3.js to connect to the Ethereum network via providers like Infura or Alchemy. Transaction Creation: Construct transaction objects with details like sender, receiver, value, gas, and…

Metana EditorialMarch 29, 2024Read

Blockchain

What are Web3.js Providers [Explained]

Web3.js, a popular JavaScript library, empowers developers to build decentralized applications (dApps) that interact with blockchains. But how do these dApps actually connect to the underlying network and perform…

Metana EditorialMarch 28, 2024Read

Blockchain

How to Connect to Ethereum with Web3.js: Understanding Web3.js Library

Web3.js open up the huge power of Ethereum blockchain for developers. This JavaScript library let's you talk with Ethereum, allowing you to interact with Ethereum's decentralized network from your web applications. With…

Metana EditorialMarch 27, 2024Read

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