Guides, tutorials &amp; career tips.

Metana EditorialMay 13, 2024Read

JavaScript DOM (Document Object Model)

Websites that update and respond to your clicks feel like magic, but there’s a logical reason behind it. In this guide, we’ll explore the secret weapon of JavaScript – the Document Object Model, or DOM for short. It’s th

Metana EditorialMay 11, 2024Read

Ethereum Gas Station Network (GSN)

Imagine you walk into a fancy restaurant, eager to try their new menu. But before you can even glance at the dishes, the waiter informs you that you need a special token to order – a token you need to buy with actual cas

Metana EditorialMay 9, 2024Read

Asynchronous JavaScript: Callbacks, Promises, and Async/Await

Best way to understand asynchronous JavaScript is to imagine you’re juggling. You can keep a few balls in the air at once, but eventually, you’ll need to catch one before throwing another. That’s how traditional JavaScri

Jarrod PyneMay 8, 2024Read

Ethernaut Level 7 Walkthrough: Force

Being relatively new to the Web3 space and having a keen interest in Security has naturally led to me participating the Ethernaut Challenge hosted by OpenZeppelin. For those unfamiliar with these challenges, each challen

Metana EditorialMay 7, 2024Read

JavaScript Error Handling and Debugging Techniques

JavaScript, the popular language of the web, breathes life into interactive websites and dynamic applications. But even the most brilliant code can encounter errors, leaving your masterpiece malfunctioning. Fear not, fel

Metana EditorialMay 6, 2024Read

Event Handling in JavaScript: Adding Interactivity to Web Pages

TL;DR: Imagine a website that’s just a static image, like a printed page. No clicking, no animations, no dynamic content – just… there. Boring, right? That’s where event handling in JavaScript comes in, like a spark that

Metana EditorialMay 5, 2024Read

Solidity and zk-SNARKs: The Dynamic Power Duo

Imagine a super secure way to store information and run programs on the internet, like a giant digital record keeper everyone can trust. That’s what blockchains are. But right now, blockchains struggle with two things: k

Ethernaut Level 6 Walkthrough: Delegation

In this level, we will familiarize ourselves with delegatecall and fallback. This serves as a preliminary step towards understanding more advanced concepts, like the proxy pattern.This article will clarify delegatecall a

Vinh TranMay 3, 2024Read

Shiran SukumarMay 3, 2024Read

Ethernaut Level 5 Walkthrough: Token

Hello Everyone! My name is Shiran Sukumar, I am a student at Metana. I wanted to share with you all a walkthrough on how to approach and solve an Ethernaut challenge. Ethernaut is a fantastic learning resource for Solidi

Metana EditorialMay 2, 2024Read

DAO Treasury Management

Decentralized Autonomous Organizations (DAOs) are reshaping collaboration, but managing their treasuries requires specialized knowledge. This guide will take you through the secrets of effective DAO treasury management,

Sven DaneelMay 1, 2024Read

Ethernaut Level 4 Walkthrough: Telephone

This Web3/Solidity-based wargame is akin to a hacking Capture The Flag (CTF) challenge, where each level presents a smart contract puzzle waiting to be ‘hacked’. It’s an immersive and interactive way to learn about Ether