jsフック関数は簡単なアニメーションを実現します.

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DOCTYPE html>
<html>
<head>
    <title>title>
    <meta charset="utf-8">
    <style>
        #ball {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: pink;
        }
    style>
head>

 
<body>
    <div id="app">
        <input type="button" value="  " @click="flag=!flag">
        <transition @before-enter="beforeEnter" @enter="enter" @after-enter="afterEnter">
            <div id="ball" v-show="flag">div>
        transition>
    div>

body>
<script src="https://cdn.staticfile.org/vue/2.6.10/vue.js">script>
<script>
    let vm = new Vue({
        el: "#app",
        data: {//       
            flag: false
        },
        methods: {
            // el         
            beforeEnter(el) {
                el.style.transform='translate(0,0)';//      
            },
            enter(el){
                //       ，           
                el.offsetWidth;//              ，    el.offsetHeight
                el.style.transition='all 1.5s ease';
                el.style.transform='translate(150px,250px)';
            },
            afterEnter(el){
                console.log('ok');
                this.flag=false;//    
            }
        }
    });
script>

html>
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