[React] Integration test a React component that consumes a Render Prop

【[React] Integration test a React component that consumes a Render Prop】的更多相关文章

[React] Integration test a React component that consumes a Render Prop

In this lesson, I use Enzyme and Jest's Snapshot functionality to write an integration test for a component called CounterConsumer that consumes the Render Prop component Counter. This integration test is great because it doesn't necessarily care tha…

[React + Mobx] Mobx and React intro: syncing the UI with the app state using observable and observer

Applications are driven by state. Many things, like the user interface, should always be consistent with that state.MobX is a general purpose FRP library that provides the means to derive, for example, a React based user interface automatically from…

[React] Unit test a React Render Prop component

In this lesson, I use Enzyme and Jest to unit test a Counter Render Prop component. Writing integration tests are perfect for components that consume a Render Prop component. Likewise, unit tests are important to write for the Render Prop component i…

转载 React.createClass 对决 extends React.Component

先给出结论,这其实是殊途同归的两种方式.过去我们一般都会使用 React.createClass 方法来创建组件,但基于 ES6 的小小语法糖,我们还可以通过 extends React.Component 来创建组件. 这两种创建方式之间的差别很小,但只有了解这些颇有趣味的区别之后,我们才能做出最适合自己的选择. 语法区别首先,让我们通过两个代码片段和相应的解释来看看到底有哪些语法区别. React.createClass 我们先把新创建的 class 赋给一个常量,并添上 render 函…

[React] Use React.memo with a Function Component to get PureComponent Behavior

A new Higher Order Component (HOC) was recently released in React v16.6.0 called React.memo. This behavior of the HOC is similar to what you’d get when using React.PureComponent or shouldComponentUpdate in a React Class Component. However, now with t…

[React Router] Create a ProtectedRoute Component in React Router (setState callback to force update)

In this lesson we'll create a protected route just for logged in users. We'll combine a Route with a render prop and use a loggedIn prop to determine if the route should be allowed to be accessed. Finally we'll use nav state to preserve the location…

[React] Implement a Higher Order Component with Render Props

When making a reusable component, you'll find that people often like to have the API they're most familiar with, so in this lesson we'll recreate the withToggle Higher Order Component using our new ConnectedToggle render prop component. function with…