Vue’s Composition API: Why it’s Important
summary
Argues the Composition API replaces Options magic with plain JavaScript closures and shows a live refactor of a small bookcase app from Options API to Composition API that runs correctly after the change. Uses Vue 3 (compatible with Vue 2 via the composition API plugin), ref and reactive wrappers, computed and onMounted, and optional setup script; claims ~99% API compatibility across Vue 2→3, full TypeScript support, easier debugging and unit testing, and incremental migration without rewriting the whole app.
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chapters (22)
- 0:00Introduction
- 0:54Why the Composition API
- 2:47Options API
- 4:00Composition API
- 5:41Writing Code
- 5:52What is Composition API
- 7:16Setting up Composition API
- 12:20Reactives
- 12:50Scope
- 14:00Mounted
- 15:20Computed
- 18:30Object
- 19:20Composition
- 20:40More Natural
- 23:20Option Syntax
- 25:10Vue Reactive
- 27:55Vue Typescript
- 28:40Paste Interfaces
- 30:40Props
- 35:50Reactive Store
- 39:40Reactive Objects
- 42:40Setup Script
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