react 高阶组件如何写,一个高阶组件的小demo
作者:互联网
高级组件 higherOrderComponent (HOC)
是个纯函数,接收一个组件,返回一个组件
例子: 效果图 js部份import React, { Component } from "react"; import "./Blackboard.less"; const defaultParams = { } export const Blackboard = (params = defaultParams) => (WrappedComponent) => { return class HOC extends Component { render() { return ( <div className="Blackboard"> <section className="code-box-demo"> <WrappedComponent {...this.props} {...params}/> </section> <section className="code-box-meta markdown"> <div className="code-box-title"> <span>高阶组件用法举例</span> </div> </section> </div> ) } } }
less部份
.Blackboard{ border: 1px solid #e9e9e9; border-radius: 6px; display: inline-block; width: 100%; position: relative; margin: 0 0 16px; transition: all .2s ease; &:hover { box-shadow: 0 0 6px rgba(0,0,0,.15); position: relative; z-index: 10; // background: #fff; } .code-box-demo{ width: 100%; border-bottom: 1px solid #e9e9e9; padding: 42px 20px 50px; } .code-box-meta.markdown { position: relative; padding: 17px 16px 15px 20px; border-radius: 0 0 6px 6px; -webkit-transition: background-color .4s ease; transition: background-color .4s ease; width: 100%; font-size: 12px; } .markdown { color: #666; line-height: 1.8; } .code-box-title{ position: absolute; top: -13px; padding: 1px 8px; margin-left: -8px; color: #777; border-radius: 6px; border-top-left-radius: 0; background: #fff; -webkit-transition: background-color .4s ease; transition: background-color .4s ease; } }
使用方式
import React from "react"; import { Blackboard } from "components/Blackboard/Blackboard"; // 引入高阶组件
class YearPicker extends React.Component { constructor(props) { super(props) this.state = { // ... }; } render() { return ( <div> // ... </div> ) } } // 组件导出之前包裹一下 export default Blackboard({})(YearPicker)
标签:color,demo,border,6px,background,Blackboard,组件,高阶 来源: https://www.cnblogs.com/MrZhujl/p/13861554.html