动画、过渡、页面加载时就有动画
<style>
.de{
width: 100px;
height: 100px;
background: green;
}
.fade-leave-active {
transition: opacity 1s;
}
.fade-leave-to {
opacity: 0
}
</style>
</head>
<body>
<div id="demo">
<button @click="show = !show">click me</button>
<transition name="fade"
enter-active-class="animated swing fade-enter-active"
leave-active-class="animated shake fade-leave-active"
appear
appear-active-class="animated swing">
<div v-if="show" class="de">sfsf</div>
</transition>
</div>
<script>
new Vue({
el: '#demo',
data: {
show: true
}
})
</script>
</body>2. 动画时长的设置
transition中的duration设置动画时长，单位是ms。注意：每个动画有自己的时长，各是各的，
我觉得吧，这个时长就是class样式存在的时间，动画和过渡跟他没有关系
<body>
<div id="demo">
<button @click="show = !show">click me</button>
<transition name="fade"
:duration="5000"
enter-active-class="animated swing fade-enter-active"
leave-active-class="animated shake fade-leave-active"
appear
appear-active-class="animated swing">
<div v-if="show" class="de">sfsf</div>
</transition>
</div>
<script>
new Vue({
el: '#demo',
data: {
show: true
}
})
</script>
</body>
也可以具体设置enter和leave的时间：
:duration="{enter:5000, leave: 10000}"