发布于 2016-07-09 01:00:59 | 75 次阅读 | 评论: 0 | 来源: 网友投递
Vue.js 轻量级 JavaScript 框架
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。
Vue 2.0.0-beta.1 发布了，
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):
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:
{
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:
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:
export default {
functional: true,
render (h, { data, children }) {
// simple identity higher-order component
return h(SomeOtherComponent, data, children)
}
}
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