Browsers vs Servers

Summary

Understanding what actually runs where — the browser executes your frontend JavaScript and renders HTML/CSS; the server runs your backend code, talks to the database, and returns data or HTML.

• 1List what code in a typical request runs in the browser vs on the server.
• 2Learn why some code, like database credentials, must never run in the browser.
• 3Understand server-side rendering blurs this line — some 'frontend' code actually runs on the server too.