Learn TypeScript – Crash Course for Beginners

freeCodeCamp.org July 23, 2025
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Discover TypeScript in 1 hour! This beginner-friendly tutorial covers the basics, offering a quick TypeScript crash course for developers. Learn essential concepts, enhance your JavaScript skills, and boost your development efficiency. Course from @GlitchyDevs 💻 Code: https://github.com/GlitcherXO/typescript-tutorial ⭐️ Chapters ⭐️ - 0:00:00 Intro & What Is TypeScript? - 0:03:14 Why Should You Learn TypeScript? - 0:04:13 How TypeScript Works - 0:04:21 Prerequisite - 0:04:28 Chapter 2 Setup - 0:04:35 Setup - 0:05:44 Create Your First Application - 0:06:52 Running the Code - 0:07:52 Configuration - 0:09:50 Chapter 3 Types - 0:09:57 Built-In Types - TypeScript Types - 0:10:28 Type Annotations - 0:11:58 Dynamic Type Determination - 0:12:34 Any Type - 0:13:18 Chapter 4 Object - 0:13:25 Type Annotations With Objects - 0:14:27 Chapter 5 Functions - 0:14:34 Type Annotations With Function - 0:16:06 Optional And Default Parameter - 0:16:35 Optional Parameter - 0:16:59 Default Parameter - 0:17:44 Function Rest Parameter - 0:19:02 Arrow Function - 0:19:15 Anonymous Function - 0:19:46 Void & Never - 0:20:46 Chapter 6 Advanced Types - 0:20:52 Union Types - 0:21:35 Literal Types - 0:23:13 Nullable Types - 0:24:52 Type Alias - 0:26:15 Intersection Type - 0:26:56 Chapter 7 Array - 0:27:02 Type Annotations With Arrays - 0:27:24 Type Annotations With Multidimensional Arrays - 0:28:01 Chapter 8 Tuple - 0:28:07 Tuple - 0:28:52 Chapter 9 Enums - 0:28:59 Enums - 0:30:00 Chapter 10 Interface - 0:30:07 Interface - 0:31:41 Interface Method And Parameters - 0:32:54 ReOpen The Interface And Use Cases - 0:35:11 Built-in Interface - 0:35:59 HTMLImageElement - 0:37:35 Interface vs. Type Aliases - 0:39:48 Chapter 11 Classes - 0:39:54 Class Type Annotations - 0:41:16 Class Access Modifiers - 0:43:00 Class Accessors - 0:44:06 Class Static Members - 0:45:17 Class Implement Interface - 0:46:09 Abstract Classes And Members - 0:47:24 Polymorphism & Method Override - 0:49:46 Class vs Interface - 0:49:54 Chapter 12 Generics - 0:50:01 Generics - 0:51:39 Generics Multiple Types - 0:52:44 Generics Classes - 0:53:59 Generics And Interfaces - 0:55:17 Type Assertions - 0:55:56 Chapter 13 Debugging - 0:56:02 Debugging - 0:58:48 Chapter 14 Outro & What's Next - 0:58:55 Outro ❤️ Support for this channel comes from our friends at Scrimba – the coding platform that's reinvented interactive learning: https://scrimba.com/freecodecamp 🎉 Thanks to our Champion and Sponsor supporters: 👾 Drake Milly 👾 Ulises Moralez 👾 Goddard Tan 👾 David MG 👾 Matthew Springman 👾 Claudio 👾 Oscar R. 👾 jedi-or-sith 👾 Nattira Maneerat 👾 Justin Hual -- Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://freecodecamp.org/news

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