JavaScript and TypeScript are both programming languages used for web development, but they have several key differences.
Typing System :
- TypeScript has a strong typing system, while JavaScript is dynamically typed. This means that in TypeScript, variables must be declared with a specific type (e.g. string, number, etc.),
- whereas in JavaScript, the type of a variable can change during runtime.
Object-Oriented Features :
- TypeScript supports object-oriented programming concepts such as interfaces, classes, and inheritance, which are not available in pure JavaScript.
Compilation :
- TypeScript is a statically compiled language, which means that the code written in TypeScript is compiled into JavaScript before it is executed.
- This can lead to better performance and improved error handling, as some errors can be caught during the compilation process.
Namespaces :
- TypeScript has the concept of namespaces, which provide a way to organize code into logical groups and avoid naming conflicts.
- JavaScript does not have this feature.
Tooling :
- TypeScript has better tooling support than JavaScript, including integrated development environments (IDEs) with improved code completion, syntax highlighting, and error checking.
Learning Curve :
- TypeScript has a steeper learning curve than JavaScript, as it introduces several new concepts, such as classes and interfaces, that are not found in JavaScript.
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