MERN stack = MongoDB, Express.js, React, Node.js. Great for web development. Uses JavaScript everywhere. Can do front-end and back-end. Scales well, active community. Good for fast development, real-time features. Popular for modern web apps.

⚠️ Recommend to learn from junior till senior developer👨‍💻

👽 How to control a React component with the URL

"Can we make this screen shareable via the URL?"

It's a common feature request. Surprisingly, it also leads to one of the most common causes of bugs in React applications.

⌨️ Javascript Array Methods Cheatsheet.