Vue 3 Migration Guide
This guide is primarily for users with prior Vue 2 experience who want to learn about the changes between Vue 2 and Vue 3. This is not something you have to read from top to bottom before trying out Vue 3. The recommended way to learn Vue 3 is by reading the new documentation.
Notable New Features
Some of the new features to keep an eye on in Vue 3 include:
- Composition API*
- SFC Composition API Syntax Sugar (
- Emits Component Option**
@vue/runtime-coreto create custom renderers
- SFC State-driven CSS Variables (
<style scoped>can now include global rules or rules that target only slotted content
- Suspense experimental
* Now also supported in Vue 2.7
** Supported in Vue 2.7, but only for type inference
Breaking changes between Vue 2 and Vue 3 are listed here.
New Framework-level Recommendations
New framework-level recommendations are listed here.
If you have an existing Vue 2 project or library that you intend to upgrade to Vue 3, we provide a build of Vue 3 that offers Vue 2 compatible APIs. Check out the Migration Build page for more details.