实例
实现上图所示的效果代码如下：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>transition</title> <script src="https://cdn.bootcss.com/vue/2.5.2/vue.min.js"></script> </head> <body> <div> <div @mouseenter="show" @mouseleave="hide"> <div> {{content}} </div> <transition> <div v-show="flag"> 弹出层 </div> </transition> </div> </div> <script> var app = new Vue({ el: "#app", data: { flag: false, content: "鼠标移入" }, methods: { show: function () { this.flag = true; this.content = "鼠标移出"; }, hide: function () { this.flag = false; this.content = "鼠标移入"; } } }) </script> <style> body, html { height: 100%; margin: 0; } #app { width: 100%; height: 100%; display: flex; justify-content: center; align-items: center; } .enter-div { width: 200px; height: 50px; /* margin-top: 200px; */ background-color:darkgrey; text-align: center; line-height: 50px; } .showContainer { position: absolute; right: 620px; top: 250px; width: 200px; /* height: 96px; */ line-height: 96px; text-align: center; color: black; box-shadow: 0 0 5px -1px #ccc; z-index: 10; overflow: hidden; } /* 进入和离开时过渡状态的 动画状态 */ .fade-enter-active, .fade-leave-active { transition: all .10s ease; height: 96px; } /* 进入时的 初始状态 和 离开时动画的 结束状态 */ .fade-enter, .fade-leave-to { height: 0; } /* 离开时的 初始状态 和 进入时动画的 结束状态 */ .fade-enter-to, .fade-leave { height: 96px; } </style> </body> </html>
transition的使用
1.没有名字的transition组件
<transition> <div> ...... </div> </transition> <style> .v-enter, .v-leave-to { ...... } .v-leave, .v-enter-to { ...... } ...... </style>
2.有名字的transition组件
如下代码，该transition组件的name属性为fade，那么应设置的动画类名为fade-enter，其他的类名也是如此。<transition> <div> ...... </div> </transition> <style> .fade-enter, .fade-leave-to { ...... } .fade-leave, .fade-enter-to { ...... } ...... </style>
3.自定义过渡类名
<transition enter-class="show-enter" enter-active-class="animation fly" leave-active-class="xxx" ...... > <div> ...... </div> </transition> <style> .show-enter { ...... } .animation { ...... } .fly { ...... } ...... </style>
4.自定义钩子函数
<transition v-on:enter="enter" v-on:after-enter="after" v-on:leave="leave" ...... > <div> ...... </div> </transition>
methods: { enter: function (el) { ...... }, after: function (el) { ...... }, ...... }
官方文档中的用法不止这几种，这里只例举了几种简单常用的。源码在此
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