This repository compares how React projects differ when written using JavaScript (JS) and TypeScript (TS).
| Concept | JavaScript (JS) | TypeScript (TS) |
|---|---|---|
| Typing | Dynamic (no enforced types) | Static (enforced types) |
| Error Detection | Runtime errors | Compile-time + runtime errors |
| Safety | Risk of bugs due to flexible typing | Prevents many bugs before running |
| Developer Tools | Basic autocomplete | Advanced autocomplete & IntelliSense |
| Learning Curve | Easier to start | Steeper, but worth it in large codebases |
js-version/— React Calculator using JavaScriptts-version/— React Calculator using TypeScript
Both JS and TS can build React apps.
- TypeScript adds type safety, helps catch bugs before running, and makes code more reliable and maintainable.
- JavaScript is more beginner-friendly and flexible, but may allow bugs silently.
- Use JS for small, fast projects or learning.
- Use TS for long-term, team-based, or production apps.