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React 16.3.0 发布,构建用户界面的 JavaScript 库

时间:2018-03-30  来源:未知  作者:admin666

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React 16.3.0 已发布,React 是 Facebook 推出的一个为数据提供渲染为 HTML 视图,用来构建用户界面的开源 JavaScript 库。

React 视图通常采用包含以自定义 HTML 标记规定的其他组件的组件渲染。React 为程序员提供了一种子组件不能直接影响外层组件("data flows down")的模型,数据改变时对 HTML 文档的有效更新,和现代单页应用中组件之间干净的分离。



Add a new officially supported context API

Add a new React.createRef() API as an ergonomic alternative to callback refs.

Add a new React.forwardRef() API to let components forward their refs to a child. 

Fix a false positive warning in IE11 when using React.Fragment

Replace React.unstable_AsyncComponent with React.unstable_AsyncMode

Improve the error message when calling setState() on an unmounted component.

React DOM

Add a new getDerivedStateFromProps() lifecycle and UNSAFE_ aliases for the legacy lifecycles. 

Add a new getSnapshotBeforeUpdate() lifecycle

Add a new <React.StrictMode> wrapper to help prepare apps for async rendering. 

Add support for onLoad and onError events on the <link> tag

Add support for noModule boolean attribute on the <script> tag

Fix minor DOM input bugs in IE and Safari

Correctly detect Ctrl + Enter in onKeyPress in more browsers

Fix containing elements getting focused on SSR markup mismatch

Fix value and defaultValue to ignore Symbol values

Fix refs to class components not getting cleaned up when the attribute is removed. 

Throw with a meaningful message if the component runs after jsdom has been destroyed. 

Don't crash if there is a global variable called opera with a null value

Don't check for old versions of Opera

Deduplicate warning messages about <option selected>

Deduplicate warning messages about invalid callback

Deprecate ReactDOM.unstable_createPortal() in favor of ReactDOM.createPortal()

Don't emit User Timing entries for context types

Improve the error message when context consumer child isn't a function. 

Improve the error message when adding a ref to a functional component. 

React DOM Server

Prevent an infinite loop when attempting to render portals with SSR.

Warn if a class doesn't extend React.Component

Fix an issue with this.state of different components getting mixed up.

Provide a better message when component type is undefined.

React Test Renderer

Fix handling of fragments in toTree()

Shallow renderer should assign state to null for components that don't set it. 

Shallow renderer should filter legacy context according to contextTypes

Add an unstable API for testing asynchronous rendering.

React Is (New)

First release of the new package that libraries can use to detect different React node types. 

Add ReactIs.isValidElementType() to help higher-order components validate their inputs. 

React Lifecycles Compat (New)

First release of the new package to help library developers target multiple versions of React. 

Create Subscription (New)

First release of the new package to subscribe to external data sources safely for async rendering. 

React Reconciler (Experimental)

Expose react-reconciler/persistent for building renderers that use persistent data structures. 

Pass host context to finalizeInitialChildren().

Remove useSyncScheduling from the host config.

React Call Return (Experimental)

Fix a crash on updates.