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hello-vue3's Introduction

Vue3新特性全面剖析

  • 开发
  • alpha版：内部测试版 α
  • bate版：公开测试版 β
  • rc版：Release Candidate （候选版本）
  • stable版：稳定版

Performance

  • 重写了虚拟DOM的实现（跳过静态节点，只处理动态节点）
  • update性能提高1.3~2倍
  • SSR速度提高了2~3倍

Tree shaking

  • 可以将无用模块“剪辑”，仅打包需要的

Fragment

  • 不再限于模板中的单个根节点
- 以前称为，译作传送门 - 可在嵌套层级中等待嵌套的异步依赖项

TypeScript

  • 更好的TypeScript支持

Custom Renderer API

  • 自定义渲染器API
  • 用户可以尝试WebGL自定义渲染器

Composition API

  • 组合式API，替换原有的 Options API
    • 根据逻辑相关性组织代码，提高可读性和可维护性
    • 更好的重用逻辑代码（避免mixins混入时命名冲突的问题）
  • 但是依然可以延用 Options API

Proxy

https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Proxy

  • 响应式原理不再基于 Object.defineProperty

掌握setup和响应式系统API

https://vue-composition-api-rfc.netlify.app/zh/api.html

掌握新生命周期函数和模板refs的使用

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