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TypeScript vs JavaScript

TypeScript is a superset of JavaScript that adds optional type annotations and other features such as interfaces, classes, and namespaces. JavaScript is a dynamically-typed language that is primarily used for client-side web development and can also be used for server-side development.

Here are a few key differences between TypeScript and JavaScript:

  • Types: TypeScript has optional type annotations while JavaScript is dynamically-typed. This means that in TypeScript, you can specify the data type of variables, parameters, and return values, which can help catch type-related errors at compile-time.
  • Syntax: TypeScript extends JavaScript syntax with features like interfaces, classes, and namespaces. This provides a more robust and organized structure for large-scale projects.
  • Tooling: TypeScript has better tooling support, such as better editor integration, type checking, and code refactoring.
  • Backwards Compatibility: TypeScript is fully compatible with existing JavaScript code, which means you can use TypeScript in any JavaScript environment.

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