srwx/practice-typescript

Self learning in TypeScript fundamental.

This project is for learning TypeScript.

What TypeScript? 😵

• Open-source programming language from Microsoft.
• Typed superset of JavaScript.
• Compiled down to plain JavaScript which is understood by browser.

Why TypeScript? 🤨

• In general, variable in JavaScript is dynamic type that JavaScript doesn't know variable type until runtime.
• TypeScript is static type that knew variable type before runtime. so TypeScript able to handle type error better than js.

Install TypeScript 🚧

1. Install node.js
2. Run command: npm install -g typescript
3. Run command: tsc -v (Optionals, to check typescript version.)

Compile .ts file 🚀

• Run command: tsc [filename].ts
• TypeScript will build .js file, so you can run .js file by node using command: node [filename].js
• (Options) You can automatically recompile .ts file to .js file using command: tsc [filename].ts --watch

Summary in index.ts file with 6 topics 📌

1. Variable Declarations
2. Variable Types
3. Function
4. Interface
5. Class
6. Class Access Modifiers