| 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 |
什么时候使用什么？
- >使用JavaScript进行快速脚本，小型项目或直接与浏览器一起工作时。
- >将打字稿用于大规模应用，更好的可维护性和键入安全性。
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