Person.js 

import React from 'react';


const Person=(props)=>{
    return(
        <div>
            <p>
             我是{props.name},今年{props.age}岁
            </p>
            <button onClick={props.myclick}>子组件的点击</button>     
        </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}  myclick={this.change.bind(this,'小可爱小可爱')}/>
         
        </div>
      )      
  } 
}
 
export default App;