javascript - × 类型错误 : Cannot set property 'props' of undefined

Question

函数组件( Prop 、上下文、更新器){

236 | this.props = props; 237 | this.context = context; 238 | this.refs = emptyObject; 239 | // We initialize the default updater but the real one gets injected by the

名称.js

| import React,{Component}from 'react';
  2 | 
> 3 | class Name extends Component(){
  4 |     render(){
  5 |         return(
  6 |             <div> hello world</div>`

Answer 1

你那里有一些错别字。尝试删除 Component 之后的括号，如下所示:

class Name extends Component {
  // ...
}