基于react组件之间的参数传递(详解)
壹然 人气:01、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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