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

HTML vs DOM Explained: Building Websites

Imagine a web page as a magnificent castle. The blueprints outlining the structure and layout are similar to HTML (HyperText Markup Language). But a static blueprint doesn't make a lively castle, right? That's where the…

Aaron EmmanuelJune 8, 2024Read

Ethernaut Walkthrough

Ethernaut Level 10 Walkthrough: Re-entrancy

Understanding re-entrancy is crucial for anyone developing or auditing Ethereum smart contracts. Failure to properly handle re-entrant calls can result in the loss of funds or the manipulation of contract state by…

Georgi PlamenovJune 7, 2024Read

Full-Stack

Javascript Window: Browser Object Model (BOM)

TL;DR The Browser Object Model (BOM) allows JavaScript to interact with the browser, enabling dynamic web experiences. Key components include: Window Object : Represents the browser window and provides methods like…

Metana EditorialJune 6, 2024Read

Full-Stack

What is a VPS? (Virtual Private Server)

Imagine a bustling apartment complex. Multiple tenants share the same building, but each has their own private unit with complete control over the interior. That's the essence of a Virtual Private Server (VPS) in the…

Metana EditorialJune 5, 2024Read

Blockchain

What is a dApp? Decentralized Applications Simplified

We all rely on apps in our daily lives – for social media, shopping, banking, and more. But have you ever considered who controls these apps and how they operate? Traditional apps run on centralized servers, owned and…

Metana EditorialJune 4, 2024Read

Full-Stack

What is Fuzzing? (Fuzz Testing) Simplifying Testing with Mocks

Imagine testing software by throwing unexpected scenarios at it, like giving a map app nonsensical directions or feeding gibberish to a search engine. That's the essence of fuzzing, a powerful automated testing…

Thinal PereraJune 3, 2024Read

Full-Stack

Javascript setTimeout(): How to Delay Code Execution

TL;DR setTimeout is a JavaScript function that allows you to schedule the execution of code after a specified delay. It's useful for creating smoother user experiences, such as simulating delays, fading elements,…

Metana EditorialMay 31, 2024Read

Full-Stack

Bcrypt and JWT: Web App Security

TL;DR Bcrypt securely hashes passwords with salting, making them resistant to attacks. JWT enables stateless authentication by securely transmitting user data. Together, they improve security, scalability, and…

Metana EditorialMay 30, 2024Read

Web3.0

How to Launch a Web3 Project Successfully

Web3 is an exciting and closely-knit space filled with prospects, where users gain ownership and change ways of interacting online. If you have an outstanding concept to share and align with the increasing development…

Metana EditorialMay 29, 2024Read

Solidity

Delegatecall in Solidity: Your Simplified Guide

Delegatecall is a powerful but intricate feature in Solidity that allows contracts to delegate execution to other contracts. Understanding delegatecalls is crucial for building advanced smart contract functionalities…

Metana EditorialMay 28, 2024Read

Full-Stack

What is Node.js? Explained Simply

Imagine a world where you can leverage the same language, JavaScript, that brings websites to life, to power the engines behind those websites. That's the magic of Node.js! In this comprehensive guide, we'll embark on a…

Metana EditorialMay 27, 2024Read

Full-Stack

JavaScript and JSON [Examples in Action]

The internet thrives on data exchange. From social media updates to online shopping carts, information constantly zips between servers and your device. But how does this data travel in a way that different systems can…

Metana EditorialMay 22, 2024Read

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