Learn Markdown in minutes! 📝 Format text easily with symbols & characters, used in docs, blogs, GitHub README files & note-taking apps. Easy to learn, saves time & works everywhere! 🔑

Web Storage API explained: Local Storage (persistent) and Session Storage (temporary) with examples, best practices & advanced features. Store data in key-value pairs, up to ~5MB per origin. Use JSON for complex data and clear old data periodically.

Make any HTML element draggable using `draggable="true"`. Detect drag start with `dragstart`, allow dropping with `dragover` and move item with `drop`.

Master Regex in JavaScript! Learn basic methods (test(), match()), special characters (. , *, +, ?, {}), flags (g, i, m), and anchors (^, $) to simplify text matching and manipulation.