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Vue中多個元素或組件的過渡

發(fā)布時間：2020-06-26 05:25:27 來源：網(wǎng)絡(luò) 閱讀：306 作者：梁十八 欄目：web開發(fā) 
<!DOCTYPE?html>
<html>
<head>
????<title></title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<link?rel="stylesheet"?type="text/css"?href="./animate.css">
????<script?src="./vue.js"></script>
????<!--?<script?src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>?-->
????<style>
????????.myfade-enter,?.v-leave-to?{
????????????opacity:?0;
????????}
????????.v-enter-active,?.v-leave-active?{
????????????transition:?opacity?1s;
????????}
????</style>
</head>
<body>
????<div?id="root">
????????<transition?name="myfade">
????????????<div?v-if="show">hello</div>
????????????<div?v-else>bye</div>
????????</transition>
????????<button?@click="handleClick">切換</button>
????</div>
????<script?type="text/javascript">
????????var?vm?=?new?Vue({
????????????el:?"#root",
????????????data:?{
????????????????show:?true
????????????},
????????????methods:?{
????????????????handleClick:?function()?{
????????????????????this.show?=?!this.show
????????????????}
????????????}
????????});
????</script>
</body>
</html>

(像上面這種加了style并不會實現(xiàn)漸變效果，因為vue默認(rèn)是會盡量復(fù)用dom，想要vue不復(fù)用dom，要給其加上不同的key值)

加上不同key值后，漸變效果有了：

<!DOCTYPE?html>
<html>
<head>
????<title></title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<link?rel="stylesheet"?type="text/css"?href="./animate.css">
????<script?src="./vue.js"></script>
????<!--?<script?src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>?-->
????<style>
????????.myfade-enter,?.myfade-leave-to?{
????????????opacity:?0;
????????}
????????.myfade-enter-active,?.myfade-leave-active?{
????????????transition:?opacity?1s;
????????}
????</style>
</head>
<body>
????<div?id="root">
????????<transition?name="myfade">
????????????<div?v-if="show"?key="hello">hello</div>
????????????<div?v-else?key="bye">bye</div>
????????</transition>
????????<button?@click="handleClick">切換</button>
????</div>
????<script?type="text/javascript">
????????var?vm?=?new?Vue({
????????????el:?"#root",
????????????data:?{
????????????????show:?true
????????????},
????????????methods:?{
????????????????handleClick:?function()?{
????????????????????this.show?=?!this.show
????????????????}
????????????}
????????});
????</script>
</body>
</html>

如果想設(shè)置多個屬性之間的切換效果，可以用mode（mode="in-out"：先顯示要顯示的再隱藏要隱藏的。mode="out-in"：和前面的相反）：

<!DOCTYPE?html>
<html>
<head>
????<title></title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<link?rel="stylesheet"?type="text/css"?href="./animate.css">
????<script?src="./vue.js"></script>
????<!--?<script?src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>?-->
????<style>
????????.myfade-enter,?.myfade-leave-to?{
????????????opacity:?0;
????????}
????????.myfade-enter-active,?.myfade-leave-active?{
????????????transition:?opacity?1s;
????????}
????</style>
</head>
<body>
????<div?id="root">
????????<transition?name="myfade"?mode="out-in">
????????????<div?v-if="show"?key="hello">hello</div>
????????????<div?v-else?key="bye">bye</div>
????????</transition>
????????<button?@click="handleClick">切換</button>
????</div>
????<script?type="text/javascript">
????????var?vm?=?new?Vue({
????????????el:?"#root",
????????????data:?{
????????????????show:?true
????????????},
????????????methods:?{
????????????????handleClick:?function()?{
????????????????????this.show?=?!this.show
????????????????}
????????????}
????????});
????</script>
</body>
</html>

組件動畫也是可以的（不需要上面的不同值的key）：

<!DOCTYPE?html>
<html>
<head>
????<title></title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<link?rel="stylesheet"?type="text/css"?href="./animate.css">
????<script?src="./vue.js"></script>
????<!--?<script?src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>?-->
????<style>
????????.myfade-enter,?.myfade-leave-to?{
????????????opacity:?0;
????????}
????????.myfade-enter-active,?.myfade-leave-active?{
????????????transition:?opacity?1s;
????????}
????</style>
</head>
<body>
????<div?id="root">
????????<transition?name="myfade"?mode="out-in">
????????????<child1?v-if="show">hello</child1>
????????????<child2?v-else>bye</child2>
????????</transition>
????????<button?@click="handleClick">切換</button>
????</div>
????<script?type="text/javascript">
????????Vue.component("child1",?{
????????????template:?"<div>child1</div>"
????????});
????????Vue.component("child2",?{
????????????template:?"<div>child2</div>"
????????});
????????var?vm?=?new?Vue({
????????????el:?"#root",
????????????data:?{
????????????????show:?true
????????????},
????????????methods:?{
????????????????handleClick:?function()?{
????????????????????this.show?=?!this.show
????????????????}
????????????}
????????});
????</script>
</body>
</html>

動態(tài)組件的實現(xiàn)方法：

<!DOCTYPE?html>
<html>
<head>
????<title></title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<link?rel="stylesheet"?type="text/css"?href="./animate.css">
????<script?src="./vue.js"></script>
????<!--?<script?src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>?-->
????<style>
????????.myfade-enter,?.myfade-leave-to?{
????????????opacity:?0;
????????}
????????.myfade-enter-active,?.myfade-leave-active?{
????????????transition:?opacity?1s;
????????}
????</style>
</head>
<body>
????<div?id="root">
????????<transition?name="myfade"?mode="out-in">
????????????//通過動態(tài)組件的方式實現(xiàn)：
????????????<component?:is="type"></component>
????????</transition>
????????<button?@click="handleClick">切換</button>
????</div>
????<script?type="text/javascript">
????????Vue.component("child1",?{
????????????template:?"<div>child1</div>"
????????});
????????Vue.component("child2",?{
????????????template:?"<div>child2</div>"
????????});
????????var?vm?=?new?Vue({
????????????el:?"#root",
????????????data:?{
????????????????type:?"child1"
????????????},
????????????methods:?{
????????????????handleClick:?function()?{
????????????????????this.type?=?this.type?==?"child1"???"child2"?:?"child1"
????????????????}
????????????}
????????});
????</script>
</body>
</html>


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