深入理解react 组件类型及使用场景

// 函数组件
function Welcome(props) {
 return <h1>Hello, {props.name}</h1>;
}

// 类组件
class Welcome extends React.Component {
 render() {
  return <h1>Hello, {this.props.name}</h1>;
 }
}

// 无状态组件
class Welcome extends React.Component {
 render() {
  return <h1>Hello, {this.props.name}</h1>;
 }
}


// 有状态类组件
class Welcome extends React.Component {
 constructor(props) {
  super(props);
  this.state = {
    show: true
  }
 }
 render() {
   const { show } = this.state;
   return (
     <>
      { show && <h1>Hello, {this.props.name}</h1> }
     </>
  )
 }
}

class UserListContainer extends React.Component{
 constructor(props){
  super(props);
  this.state = {
   users: []
  }
 }

 componentDidMount() {
  var that = this;
  fetch('/path/to/user-api').then(function(response) {
   response.json().then(function(data) {
    that.setState({users: data})
   });
  });
 }

 render() {
  return (
   <UserList users={this.state.users} />
  )
 }
}

function UserList(props) {
 return (
  <div>
   <ul className="user-list">
    {props.users.map(function(user) {
     return (
      <li key={user.id}>
       <span>{user.name}</span>
      </li>
     );
    })}
   </ul>
  </div>
 ) 
}

import React, { Component } from 'react'
import { observer } from 'mobx-react'
import { Switch } from 'antd'

@observer
class BaseInfoView extends Component {
 constructor(props) {
  super(props)
 }

 render() {
  const {
   ideaName,
   resourceLocationDto,
   switchState,
   slotId
  } = this.props.model

  return (
   <div>
    <div className="adx-form-item-title">基本信息</div>
    <div className="ant-form-horizontal">
     <div className="ant-form-item region">
      <label className="ant-col-4 ant-form-item-label">
       <span className="require-tip">*</span>创意名称：
      </label>
      <div className="ant-col-19 ml10 region-input">
       <div className="ant-form-text">
        { ideaName }
       </div>
      </div>
     </div>

     <div className="ant-form-item region">
      <label className="ant-col-4 ant-form-item-label">
       <span className="require-tip">*</span>所属资源位：
      </label>
      <div className="ant-col-19 ml10 region-input">
       <div className="ant-form-text">
        { resourceLocationDto && resourceLocationDto.resourceName }
       </div>
      </div>
     </div>

     <div className="ant-form-item region">
      <label className="ant-col-4 ant-form-item-label">
       <span className="require-tip">*</span>创意状态：
      </label>
      <div className="ant-col-19 ml10 region-input">
       <div className="ant-form-text">
        <Switch checked={switchState == 1}/>
       </div>
      </div>
     </div>

     <div className="ant-form-item region">
      <label className="ant-col-4 ant-form-item-label">
       <span className="require-tip">*</span>推啊广告位ID：
      </label>
      <div className="ant-col-19 ml10 region-input">
       <div className="ant-form-text">
        { slotId }
       </div>
      </div>
     </div>
    </div>
   </div>
  )
 }
}

export default BaseInfoView