JavaScript

超轻量级php框架startmvc

基于react组件之间的参数传递(详解)

更新时间:2020-06-03 01:06:01 作者:startmvc
1、父组件向子组件传递参数classChildextendsComponent{   componentDidMount(){     letname=this

1、父组件向子组件传递参数


class Child extends Component {
    componentDidMount(){
      let name = this.props.default;
      console,log(name);
    }
    render(){
      const { default} = this.props;
      return (
        <Input />
      )
 }
}

import React, { Component } from 'react';
import Child from './Child';

class Parent extends Component {
 state = {
 name: 'Bob'
 }
 render() {
 return (
 <div>
 <Child default={this.state.name} />
 </div>
 )
 }
}

2、子组件向父组件传递参数


class Child extends Component {
    state={
      name:'Bob'
    }
    componentDidMount(){
      this.props.toParent(this.state.name);
   }
    render(){
      return (
        <Input />
      )
 }
}

import React, { Component } from 'react';
import Child from './Child';

class Parent extends Component {
   state = {
    name:''
 }
 getChildInfo = (name)=>{
     this.setState({name:name});
   }
 render() {
 return (
 <div>
 <Child toParent={this.getChildInfo.bind(this)} />
 </div>
 )
 }
}

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react 组件传递参数