React Essentials: JSX, Babel, Bundlers & Source Maps – A Beginner’s Guide

Feb 25, 2025 · 3 min read · React Quick Notes 🚀 1. What is a React Element? A React Element is the smallest unit in React, like a DOM node but lightweight. It is immutable (can't be changed after creation). Created using JSX or React.createElement(). 📌 Example: const el...