This is one of the most frequently asked interview questions in the interview. As a developer must be aware of the key differences, let's discuss them briefly about it.
What is JavaScript?
JavaScript is a scripting programming language used to build client-side and server-side applications. It provides a runtime element management and manages the DOM dynamically. And it is a prototype-based language.
Key features of JavaScript
- Lightweight scripting language.
- Dynamic typing
- Prototype based.
- Strong Client-side validation.
- More control in the browser.
What is the TypeScript?
TypeScript is a compiled object-oriented programming language built on top of JavaScript. It is a superset of JavaScript.
Key features of TypeScript
- Object-oriented programming language.
- Strongly typed programming language
- TypeScript supports JavaScript libraries.
- It is portable.
| Feature |
JavaScript |
TypeScript |
| Typing |
Dynamically typed |
Statically typed |
| Debugging |
Stronger typing can help Identify errors |
Runtime debugging |
| Compilation error |
Detect errors in the compile time |
Detect errors in runtime |
| Support |
Client-side and server-side |
Client-side and server-side |
| Speed |
JavaScript loaded very quickly |
Compared with JavaScript, it is a bit slow |