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TypeScript
The official TypeScript site with its handbook and live Playground
Content updated · 2026-09-07
What is it · 它是什么
What is TypeScript?
The official TypeScript site is the language's front door: the Handbook runs from basic types to advanced topics like generics and narrowing, the Playground offers a zero-install online editor with live compilation, and the TSConfig reference explains every option. TypeScript is now a mainstream choice for modern front-end, and this site is its official authority.
How to use · 怎么用
How to use TypeScript
- Read the Handbook in order when starting out; the Everyday Types and narrowing chapters are what you'll use daily.
- Use the Playground to test type behavior or reproduce type errors — shareable links make it an easy way to ask for help.
- When setting up a project, consult the TSConfig reference instead of copy-pasting configs; flip each switch knowing why.
Key features · 核心特点
Key features of TypeScript
- A genuinely structured Handbook, not an API dump
- The Playground is install-free, shareable, and great for debugging types
- Every TSConfig option is officially explained — no more cargo-cult configs
- The language is open source and free, with docs tracking each release
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