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Differences between JavaScript and TypeScript

Differences between JavaScript and TypeScript

JavaScript and TypeScript are both widely used in web development. JavaScript is a dynamic programming language used for building interactive web pages, whereas TypeScript is a superset of JavaScript that adds static typing and additional features for better code maintainability.

JavaScript

JavaScript is a popular programming language used primarily for web development. It is an interpreted, high-level scripting language that allows developers to create dynamic and interactive web pages. JavaScript is supported by all modern web browsers and does not require additional compilation.

  • Dynamically typed language.
  • Interpreted and does not require compilation.
  • Runs in web browsers and on server-side using Node.js.
  • Supports object-oriented, functional, and procedural programming styles.

TypeScript

TypeScript is a programming language developed by Microsoft that extends JavaScript by adding static typing. It helps developers catch errors early during development and improves code maintainability. TypeScript code is compiled into JavaScript before being executed in a web browser.

  • Statically typed language, allowing type checking at compile time.
  • Requires a compiler to convert TypeScript code into JavaScript.
  • Provides features like interfaces, generics, and enums.
  • Enhances JavaScript by making it more scalable and maintainable.

JavaScript vs. TypeScript

Feature JavaScript TypeScript
Type System Dynamically typed Statically typed
Compilation Interpreted, does not require compilation Requires compilation to JavaScript
Syntax Simpler and more flexible More structured with additional features
Code Maintainability Can be harder to maintain in large projects Better suited for large projects due to static typing
Support for Modern Features Limited to what browsers support Supports advanced features like interfaces, generics, and enums
Usage Widely used for front-end and back-end development Used in large-scale applications and enterprise projects

 

See Also:

Selenium vs Playwright

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