Person.js 

 
import React from 'react';
 
 
const Person=(props)=>{
    return(
        <div>
            <p>
             我是{props.name},今年{props.age}岁
            </p>   
        </div>
 
    )
}
 
export default Person

App.js 

import React, {Component} from 'react';
import logo from './logo.svg';
import './App.css';
import Person from './Person/Person'
 
 
class  App extends Component{
 state={
    persons:[{name:'小仙女',age:'18'},{name:'小玉',age:'18'},{name:'家璇',age:'18'}],
  }
change=(newname)=>{
    let that=this;
    
    //动态的更改值    类似于小程序语法
    this.setState({
      persons:[
        {name:newname,age:'18'},
        {name:'小玉',age:'18'},
        {name:'家璇',age:'18'}
      ],
     
    })

  }
  render(){
  
      return(
        <div className="App">
          <Person name={this.state.persons[0].name} age={this.state.persons[0].age} />
          <button onClick={this.change.bind(this,'小可爱')}>父组件的点击</button> 
        </div>
      )      
  } 
}
 
export default App;