vue3.0 was officially released on September 18, 2020. The vue3.0 version is completely different from other versions. It minimizes the number of times developers configure tools, adds many rich built-in functions, and comes with a complete GUI for creating and managing projects.
The operating environment of this tutorial: windows7 system, vue3.0 version, DELL G3 computer.
When was vue3.0 released?
On September 18, 2020, Vue.js 3.0 was officially released. This release of the framework itself brings several major improvements, as well as some summaries of functions and processes!
1.3.0 Process
- 3.0 version Represents over 2 years of development work
- With 30+ RFCs
- 2600+ commits
- from 99 contributors
- 628 pulls Requesting
- Extensive development and documentation work
2. Vue’s mission
To be an easy-to-use language that anyone can learn quickly Close framework
3. Performance optimization
- Route lazy loading
- keep-alive cache page
- Use v-show to reuse DOM
- v-for traversal to avoid using v-if at the same time
- Long list performance optimization
- Event destruction
- Image lazy loading
- Third-party plug-ins are introduced on demand
- Stateless components are marked as functional components
- Sub-component split
- Variable localization
- SSR
4. Better TypeScript integration
- Improved TypeScript support, the editor can provide powerful types Checks and errors and warnings
- Better debugging support
5. New API for handling large-scale use cases
- reactive
- ref
- computed
- readonly
- watchEffect
- watch
- unref
- toRef
- toRefs
- isRef
- isProxy
- isReactive
- isReadonly
- customRef
- markRaw
- shallowReactive
- shallowReadonly
- shallowRef
- toRaw
6. Hierarchical internal modules
The Vue 3.0 core is still available through a simple <script> tag, but its internal structure has been completely rewritten as a set of decoupled modules. The new architecture provides better maintainability and allows end users to reduce runtime size by half through tree shaking.
The modules are as follows:
Function points provided by the module:
1. Compiler support for building Custom AST transformations (e.g., build-time i18n)
,
WebGL or Terminal) custom renderer. The default DOM renderer is built using the same API. 3. The functions exported by the @vue/reactivity module can directly access the Vue
reactive system and can be used as an independent package. It can be paired with other template solutions such as
lit-html and can even be used for non-UI scenarios.
Aims to solve the difficulties of using Vue in large applications.
The Composition API is built on top of the reactive API, enabling logic composition and reuse similar to React hooks, more flexible code organization patterns, and more reliable type inference compared to the 2.x object-based API.
8. Performance improvement (relative to Vue2)
Through tree shaking (reduced up to 41% of resource size)Initial Rendering (up to 55% faster)
Update speed: (133% faster)- Memory footprint: (up to 54% faster)
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- 9. The two experimental functions provided
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