react使用CSS實現react動畫功能示例
阿新 • • 發佈:2020-05-19
本文例項講述了react使用CSS實現react動畫功能。分享給大家供大家參考,具體如下:
react動畫:
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 ( <div> <div className={this.state.isShow?'show':'hide'}>大BOSS--孫悟空</div> <div><button onClick={this.toTogger}>召喚</button></div> </div> ); } toTogger() { this.setState({ isShow:this.state.isShow?false:true }) } } export default Boss;
css:
.hide{opacity: 1;transition: all 1.5s ease-in;} .show{opacity: 0;transition: all 1.5s ease-in;}
keyframes動畫:
.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; } }
react-transition-group動畫庫:
import {CSSTransition} from 'react-transition-group'; render() { return ( <div> <CSSTransition in={this.state.isShow} timeout={2000} classNames="boss-text" unmountOnExit > {/* <div className={this.state.isShow?'show':'hide'}>大BOSS--孫悟空</div> */} <div>大BOSS--孫悟空</div> </CSSTransition> <div><button onClick={this.toTogger}>{this.state.btn}</button></div> </div> ); }
.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;}
多DOM動畫:
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('獲取資料'+JSON.stringify(res)); this.setState({ list:res.data.data }); }) .catch((error)=>{console.log('獲取資料失敗'+error)}); } render() { console.log('3-render'); return ( <Fragment> <div> <input ref={(input)=>{this.input=input}} value={this.state.inputValue} onChange={this.change.bind(this)}/> <button onClick={this.addList.bind(this)}>新增</button> </div> <ul> <TransitionGroup> { this.state.list.map((v,i)=>{ return( <CSSTransition timeout={2000} classNames='boss-text' unmountOnExit key={i} > <List key={i} content={v} index={i} delete={this.delete.bind(this)} /> </CSSTransition> ); }) } </TransitionGroup> </ul> <Boss/> </Fragment> ); } } export default Test;
希望本文所述對大家react程式設計有所幫助。