What is Code Splitting? It is a technique used to break a single… — Tech Jargon - Decoded — TG.ME

What is Code Splitting? It is a technique used to break a single large JavaScript bundle into smaller, manageable chunks. Instead of making users wait for the entire app to download at once, the browser only fetches the code needed for the current screen. How it works: - Bundlers (like Webpack or Vite) identify dynamic import() statements. - The app is split into multiple separate .js files. - When a user navigates to a specific route, the app triggers a network request to fetch that specific chunk. - The browser then executes the new code on-the-fly. Problems Solved: - Prevents slow "Time to Interactive" on heavy websites. - Reduces the initial download size significantly. - Stops the browser from processing unused JavaScript. Scenario: A user lands on your Landing Page. Instead of downloading the 500KB code for the "User Dashboard," they only download 50KB for the landing page. The Dashboard code stays on the server until they actually log in.