As an alternate to useState, you could also use the useReducer hook that provides state and a dispatch method for triggering actions. In this lesson, we’ll centralize logic that is spread across a web application and centralize it using the useReduce…

getDerivedStateFromProps is lifecycle hook introduced with React 16.3 and intended as a replacement for componentWillReceiveProps. It is invoked after a component is instantiated as well as when it receives new props. It should return an object to up…

React & update state with props & Object.assign Object.assign({}, oldObj, newObj) https://reactjs.org/docs/react-component.html#unsafe_componentwillreceiveprops Object.assign( previousState, {quantity: state.quantity + 1}, {quantity: state.quantit…

We would like the ability to group a series of actions to be dispatched with single dispatching functions used as handlers in various parts of our game. The only issue with that, is that animations and other design elements in our game require us to…

It's important that our users enjoy using our application or website. One way we can make it happen is by adding microinteractions to subtly reward our users for performing certain actions. In this quick lesson we are going to learn how to use react-…

前言: 最近收到组长通知我们项目组后面新开的项目准备统一技术栈为react,目前我的情况是三大框架只会angular和Vue.在实际项目中只使用过一次angular5,其余项目都是使用Vue写的.写篇博客记录一下一些项目中经常使用的技巧在Vue和react中不同的实现方法. 使用JSX指定属性值和嵌入表达式: (1)指定变量作为属性值 <div title={type}>type</div> Vue中的写法: <div :title="type">t…

Sometimes it’s desired to decide within an updater function if an update to re-render should be triggered. Calling .setState with null no longer triggers an update in React 16. This means we can decided if the state gets updated within our .setState …

You can conditionally add classes to Vue.js templates using v-bind:class. This will help display the status of a todo as you add a Vuex action to patch todos. This lesson walks you through setting up a toggle button that triggers a toggle action to p…

In this lesson we'll take a stateful React component and look at how we can refactor our setState calls to use an updater function and then leverage Ramda's evolvefunction to make our updater function a reusable utility that isn't tied to the React A…

Based on research at Facebook, we know that if a user sees a flash of loading state, they perceive the app as being slower. So let's improve the pending experience for users with faster connections using css transitions to avoid showing the loading s…