Feature | JavaScript | TypeScript |
---|---|---|
Type System | Dynamic (loosely typed) | Static (strongly typed with optional types) |
Compilation | Interpreted by browsers | Compiled to JavaScript |
Error Checking | Errors appear at runtime | Errors detected at compile time |
Code Maintainability | Can be harder to maintain in large projects | Easier maintenance with type safety |
Object-Oriented Features | Supports OOP but lacks some features | Has interfaces, generics, and better OOP support |
ES6+ Features | Supported | Supports all JavaScript features + additional ones |
Browser Support | Directly supported by browsers | Needs to be compiled to JavaScript |
Learning Curve | Easier for beginners | Requires learning types and compilation process |
Tooling & IDE Support | Basic support | Better autocompletion, refactoring, and debugging in IDEs |
When to Use What?
- Use JavaScript for quick scripts, small projects, or when working directly with the browser.
- Use TypeScript for large-scale applications, better maintainability, and type safety.
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Top comments (2)
I think we forget the JSDoc, again!
JSDoc evangelism
JSDoc typing is great, but its also more limited and much harder to write. Using a strict config for TS and just using JSDoc would comparatively be reallly annoying and often really hard. So if you wanna use types and get the most out of them just stick to TypeScript, but JSDoc is really useful if you can't use TS for whatever reason.