Vue2.0.0-beta.1发布，轻量级JavaScript框架

Vue 2.0.0-beta.1 发布了，Vue.js 是构建 Web 界面的 JavaScript 库，提供数据驱动的组件，还有简单灵活的 API，使得 MVVM 更简单。

本次更新意味着API和功能集现在被认为是完整的，在官方2.0版本之前将尽最大努力避免进一步的重大更改。该团队将重点放在稳定、文件和更新支持库上，例如 vue-router 2.0。

注意：如果你是从之前的 2.0-alpha 版本升级或使用 vue-loader 、 vueify，确保完全重新安装NPM的依赖。

Fixed

• #3176 fix v-for list update edge case

• #3179 fix v-model on component value always casted to string

• various other internal stability fixes

重要更新：

• Custom directive change:

• update hook will now always be called when the component is updated. This makes the lifecycle more consistent with the new rendering model. The user can simply check forbinding.value !== binding.oldValue to persist the old behavior, or always perform the update (e.g. when the directive is bound to an object that might be mutated instead of replaced).

• hook naming change: postupdate -> componentUpdated.

• Transition hooks naming change (now same with 1.x):

• onEnter -> enter

• onLeave -> leave

• Server-side rendering:

• The component-level caching option server.getCacheKey is renamed to serverCacheKey(no longer necessary to nest under the server block):

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  export default {   // ...   serverCacheKey: props => props.item.id }

• createRenderer and createBundleRenderer no longer uses lru-cache as the default cache implementation. The user is now responsible for providing the cache implementation which should adhere to the following interface:

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  {   get: (key: string, [cb: Function]) => string | void,   set: (key: string, val: string) => void,   has?: (key: string, [cb: Function]) => boolean | void // optional }

  更多细节，请看 docs for SSR caching.

• Functional component render function signature change:

  The first argument is still h which is $createElement bound to the parent instance. Everything else is now passed in the second argument which is a context object:

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  export default {   functional: true,   render (h, context) {     // extracted and validated props for the functional component itself     context.props       // raw data for the functional component's vnode     // without extracted props     context.data       // **a function** that returns the child elements     // nested inside the functional component's tag     context.children       // the parent component instance     context.parent   } }

  This avoids having to remember the argument order and makes it easier when you only need some of the arguments:

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  export default {   functional: true,   render (h, { data, children }) {     // simple identity higher-order component     return h(SomeOtherComponent, data, children)   } }

下载地址：

• Source code (zip)

• Source code (tar.gz)