[React] Validate Custom React Component Props with PropTypes

【[React] Validate Custom React Component Props with PropTypes】的更多相关文章

[React] Validate Custom React Component Props with PropTypes

In this lesson we'll learn about how you can use the prop-types module to validate a custom React component's props. You can write you own PropTypes vlidators like such: const PropTypes = { string(props, propName, componentName) { if(typeof props[pro…

react Props 验证 propTypes，

<body><div id="example"></div> <script src="src/libs/react.js"></script><script src="src/libs/JSXTransformer.j…

[React] Spread Component Props in JSX with React

You often find duplication between the name of a prop and a variable you will assign to the prop. JSX allows you to spread an object containing your named props into your Component which enables you to avoid the repetition of matching prop names and…

A Bite Of React(2) Component, Props and State

component component:用户自己定义的元素 const element = <Welcome name="Sara" />; class Welcome extends React.Component { render() { return <h1>Hello, {this.props.name}</h1>; } } 遇到自己定义的component Welcom,React会将它的属性(name)作为对象传递给组建Welcom,即{…

React.createClass和extends Component的区别

React.createClass和extends Component的区别主要在于: 语法区别 propType 和 getDefaultProps 状态的区别 this区别 Mixins 语法区别 React.createClass import React from 'react'; const Contacts = React.createClass({ render() { return ( <div></div> ); } }); export default Cont…

React组件的state和props

React组件的state和props React的数据是自顶向下单向流动的,即从父组件到子组件中,组件的数据存储在props和state中.实际上在任何应用中,数据都是必不可少的,我们需要直接的改变页面上一块的区域来使得视图的刷新,或者间接地改变其他地方的数据,在React中就使用props和state两个属性存储数据. 描述 state的主要作用是用于组件保存.控制.修改自己的可变状态.state在组件内部初始化,可以被组件自身修改,而外部不能访问也不能修改,可以认为state是一个局部的.…