校验传递的值：
import React, { Component, Fragment } from 'react'; import List from './List.js'; class Test extends Component { constructor(props) { super(props); this.state={ inputValue:'aaa', list:['睡觉','打游戏'], } // this.add=this.add.bind(this); } addList() { this.setState({ list:[...this.state.list,this.state.inputValue], inputValue:'' }) } change(e) { this.setState({ inputValue:e.target.value }) } delete(i) { // console.log(i); const list = this.state.list; list.splice(i,1); this.setState({ list:list }) } render() { return ( <Fragment> <div> <input value={this.state.inputValue} onChange={this.change.bind(this)}/> <button onClick={this.addList.bind(this)}>添加</button> </div> <ul> { this.state.list.map((v,i)=>{ return( <List key={i} content={v} index={i} delete={this.delete.bind(this)} /> ); }) } </ul> </Fragment> ); } } export default Test;
import React, { Component } from 'react'; import PropTypes from 'prop-types'; class List extends Component { constructor(props) { super(props); this.delete = this.delete.bind(this); } render() { return ( <li onClick={this.delete} >{this.props.name}{this.props.content}</li> ); } delete=() => { this.props.delete(this.props.index); } } //传值校验 List.propTypes={ name:PropTypes.string.isRequired, content:PropTypes.string, index:PropTypes.number, delete:PropTypes.func } //设置默认值： List.defaultProps={ name:'张三' } export default List;