React 父子组件和非父子组件传值

1 <Fragment>
2     <one val={message}></one>
3 </Fragment>

1 render(){
2     let {val} = this.props;
3     return (
4         <Fragment>
5             <div>接收来自父组件的传值：{val}</div>
6         </Fragment>
7     )
8 }      

 1 render(){
 2     return (
 3         <Fragment>
 4             <one send={this.handleRevese.bind(this)}></one>
 5         </Fragment>
 6     )
 7 }
 8  
 9 handleRevese(params){
10     console.log(‘来自子组件的传值‘ + params);
11 }    

 1 render(){
 2     return (
 3         <Fragment>
 4             <button onClick={this.handleSend.bind(this)}>向父组件传值</button>                      
 5         </Fragment>
 6     )
 7 }
 8  
 9 handleSend(){
10     this.props.send(this.state.mess);
11 }

 1 render(){
 2     return (
 3         <div>
 4             <button onClick={this.handleTwo.bind(this)}>发送给Two组件</button>
 5         </div>
 6     )
 7 }
 8  
 9 handleTwo(){
10     Observer.$emit("handle",this.state.oneVal);
11 }       

 1 constructor(){
 2     super();
 3     this.state = {
 4         oneVal:""
 5     }
 6     Observer.$on("handle",(val)=>{
 7         this.setState({
 8             oneVal:val
 9         })
10     })
11 }
12  
13 render(){
14     let {oneVal} = this.state;
15     return (
16         <div>接收到one组件的值为：{oneVal}</div>
17     )
18 }