react使用CSS实现react动画功能的方法

import React, { Component } from 'react';
 
class Boss extends Component {
  constructor(props) {
    super(props);
    this.state = {
      isShow:true
    }
    this.toTogger=this.toTogger.bind(this)
  }
  render() { 
    return ( 
      

        
大BOSS--孙悟空
        
召唤
      
    );
  }
 
  toTogger() {
    this.setState({
      isShow:this.state.isShow?false:true
    })
  }
}
 
export default Boss;

.hide{opacity: 1;transition: all 1.5s ease-in;}
.show{opacity: 0;transition: all 1.5s ease-in;}

.hide{animation: hide-item 2s ease-in forwards;}
.show{animation: show-item 2s ease-in forwards;}
 
@keyframes hide-item{
  0%{
    opacity: 0;
    color: red;
  }
 
  50%{
    opacity: 0.5;
    color: saddlebrown;
  }
 
  100%{
    opacity: 1;
    color: yellow;
  }
}
 
@keyframes show-item{
  0%{
    opacity: 1;
    color:green;
  }
 
  50%{
    opacity: 0.5;
    color:greenyellow;
  }
 
  100%{
    opacity: 0;
    color: yellow;
  }
}

import {CSSTransition} from 'react-transition-group';  
 
render() { 
    return ( 
      

        
        {/* 
大BOSS--孙悟空
 */}
        
大BOSS--孙悟空
        
    
{this.state.btn}
      
    );
  }

.boss-text-enter{opacity: 0;}
.boss-text-enter-active{opacity: 1;transition: opacity 2000ms;}
.boss-text-enter-done{opacity: 1;}
 
.boss-text-exit{opacity: 1;}
.boss-text-exit-active{opacity: 0;transition: opacity 2000ms;}
.boss-text-exit-done{opacity: 0;}

import React, { Component, Fragment } from 'react';
import List from './List.js';
import axios from 'axios';
import Boss from './Boss';
import {CSSTransition,TransitionGroup} from 'react-transition-group'
 
class Test extends Component {
  constructor(props) {
    super(props);
    this.state={
      inputValue:'aaa',
      list:[],
    }
    // this.add=this.add.bind(this);
  }
 
  addList() {
    this.setState({
      list:[...this.state.list,this.state.inputValue],
      inputValue:''
    })
  }
 
  change(e) {
    this.setState({
      // inputValue:e.target.value
      inputValue:this.input.value
    })
  }
 
  delete(i) {
    // console.log(i);
    const list = this.state.list;
    list.splice(i,1);
    this.setState({
      list:list
    })
  }
 
  componentDidMount() {
    // console.log('componentDidMount');
    axios.get('https://www.easy-mock.com/mock/5e1d3d1564a3c20d7f366f91/ReactDemo1/App')
    .then((res)=>{
      console.log('获取数据'+JSON.stringify(res));
      this.setState({
        list:res.data.data
      });
    })
    .catch((error)=>{console.log('获取数据失败'+error)});
  }
 
  render() { 
    console.log('3-render');
    return (
      
      

        {this.input=input}} value={this.state.inputValue} onChange={this.change.bind(this)}/>
        添加
      
      

        
          {
            this.state.list.map((v,i)=>{
              return(
                
                  
                
              );
            })
          }
        
      
      
      
    );
  }
}
 
export default Test;