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17transition动画中的appear.html
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17transition动画中的appear.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="vue.js"></script>
</head>
<style>
.custom-appear-active{
/*color: red;*/
background: red;
transition: all 2s ease;
}
.custom-appear{
font-size: 40px;
/*color: #e069e2;*/
background: blue;
}
.custom-appear-to{
/*color: #e29138;*/
background: burlywood;
}
</style>
<body>
<!--
关于appear的用法和enter的用法相似，它只是在第一次渲染的时候才会起作用。看完整的代码：
但是这里有一些问题：关于appear-class、 appear-to-class、 appear-active-class的相同属性那个起作用的问题。
四种情况：（与他们在style中的排列顺序有关系）
1、appear-class、 appear-to-class、 appear-active-class或者 appear-to-class、appear-class、 appear-active-class的排列顺序，此时只有appear-active-class的属性起作用。
2、appear-active-class、appear-class、 appear-to-class
此时appear-active-class的不起作用，由appear-class过渡到appear-to-class属性。
3、appear-class、appear-active-class、 appear-to-class
此时appear-class属性不起作用，由appear-active-class过渡到 appear-to-class属性。
4、 appear-to-class、 appear-active-class、appear-class
此时appear-to-class不起作用，由appear-class过渡到 appear-active-class属性。
enter也有相似的问题
-->
<div id="app">
<transition
appear
appear-class="custom-appear"
appear-to-class="custom-appear-to"
appear-active-class="custom-appear-active"
>
<p>appear</p>
</transition>
</div>
<script>
new Vue({
el: "#app"
})
</script>
</body>
</html>