注意动画的钩子函数的判断逻辑，注意动画编写时类名的顺序！！
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>vue</title> <style> .box{ width: 200px; height: 200px; background-color: red; } .guo-enter-active,.guo-leave-active{ width: 200px; height: 200px; opacity: 1; background-color: red; transition: 0.7s; } .guo-leave-to{ width: 100px; height: 100px; opacity: 0; background-color: orange; } .guo-enter{ width: 100px; height: 100px; opacity: 0; background-color: orange; } .box2{ margin-top: 100px; } </style> <script src='https://www.jb51.net/vue.min.js'></script> </head> <body> <div> <div> <input type="button" value='change' @click='change'> <transition @after-enter='Enter' @after-leave='Leave'> <div v-show='show'></div> </transition> <transition @enter='Enter2' @after-leave='Leave2'> <div v-show='show2'></div> </transition> </div> </div> <script> new Vue({ el:'#app', data:{ show:false, show2:false }, methods:{ change(){ this.show = !this.show; }, Enter(){ this.show2 = true; }, Leave(){ this.show2=false; }, Leave2(){ this.show = true; }, Enter2(){ this.show = false; } } }); </script> </body> </html>