React 16

React 16.2 release efficient, flexible JavaScript


React 16 is a JavaScript library for building user interfaces.

  • Declarative: makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable, simpler to understand, and easier to debug.
  • Component-Based: Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep the state out of the DOM.
  • Learn Once, Write Anywhere: We don’t make assumptions about the rest of your technology stack, so you can develop new features in React without rewriting existing code. React can also render on the server using Node and power mobile apps using React Native.

Starting with React 16.1.0, we will no longer be publishing new releases on Bower. You can continue using Bower for old releases, or point your Bower configs to the React UMD builds hosted on unpkg that mirror npm releases and will continue to be updated.

React 16.2.0 released.


  • Add Fragment as named export to React. (@clemmy in #10783)
  • Support experimental Call/Return types in React.Children utilities. (@MatteoVH in #11422)

React DOM

  • Fix radio buttons not getting checked when using multiple lists of radios. (@landvibe in #11227)
  • Fix radio buttons not receiving the onChange event in some cases. (@jquense in #11028)

React Test Renderer

  • Fix setState() callback firing too early when called from componentWillMount. (@accordeiro in #11507)

React Reconciler

  • Expose react-reconciler/reflection with utilities useful to custom renderers. (@rivenhk in #11683)

Internal Changes


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