Becoming a full-stack developer means mastering both the client-side and server-side technologies. You’ll need to understand HTML, CSS, and JavaScript for front-end work, as well as backend frameworks, databases, and API integration. Continuous learning is key to success.
Optimizing JavaScript performance involves understanding how the browser executes code. Techniques like debouncing, throttling, minimizing DOM manipulation, and using async functions effectively can significantly improve performance in large applications.