這篇文章主要介紹了vue元素實現動畫過渡效果，小編覺得挺不錯的，現在分享給大家，也給大家做個參考。一起跟著小編過來看看吧
1 在vue 中，使用 <transition> 標籤包含著的單一子元素在使用v-show 或 v-if 切換顯示隱藏前，會先判斷是否有對應的 class 樣式能符合到該子元素上：
<script src="/public/javascripts/vuejs"></script>
<style>
red {background-color: red; width: 100px; height: 100px;}
redv-leave { margin-top: 50px; }
redv-leave-active { transition: all 3s;}
redv-leave-to { margin-top: 100px; opacity: 0;}
redv-enter { margin-top: 50px; }
redv-enter-active { transition: all 3s;}
redv-enter-to { margin-top: 10px; opacity: 0;}
</style>
<body>
<p id="app">
<transition>
<p class="red" v-show="show"></p>
</transition>
<button v-on:click="change">button</button>
</p>
<script>
new Vue({
el: '#app',
data: {
show: true
},
methods: {
change: function(){
thisshow = !thisshow;
}
}
});
</script>
</script>
</body>
v-leave 目前元素準備從顯示轉變成隱藏，在動畫開始前添加到元素上，動畫一旦開始會立即刪除；
2 自訂動畫類別名稱：
<script src="/public/javascripts/vuejs"></script>
<style>
red {background-color: red; width: 100px; height: 100px;}
redslide-leave { margin-top: 50px; }
redslide-leave-active { transition: all 3s;}
redslide-leave-to { margin-top: 100px; opacity: 0;}
redslide-enter { margin-top: 50px; }
redslide-enter-active { transition: all 3s;}
redslide-enter-to { margin-top: 10px; opacity: 0;}
</style>
<body>
<p id="app">
<transition name="slide">
<p class="red" v-show="show"></p>
</transition>
<button v-on:click="change">button</button>
</p>
<script>
new Vue({
el: '#app',
data: {
show: true
},
methods: {
change: function(){
thisshow = !thisshow;
}
}
});
</script>transition 元素可以使用 name 屬性來指定使用的類別名稱前綴，從而代替v-字段，例如事例中的 name="slide" 使本來的 v-enter 變成了 slide-enter。
3 transition 與animation 同時使用時
<script src="/public/javascripts/vuejs"></script>
<style>
@keyframes aslide {
0% {
margin-left: 10px;
}
100% {
margin-left: 100px;
}
}
red {background-color: red; width: 100px; height: 100px;}
blue {background-color: blue; width: 100px; height: 100px;}
v-leave { margin-top: 50px; }
v-leave-active { transition: all 3s; animation: aslide 5s;}
v-leave-to { margin-top: 100px;}
</style>
<body>
<p id="app">
<transition type="transition" >
<p class="red" v-show="show"></p>
</transition>
<br>
<transition type="animation" >
<p class="blue" v-show="show"></p>
</transition>
<button v-on:click="change">button</button>
</p>
<script>
new Vue({
el: '#app',
data: {
show: true
},
methods: {
change: function(){
thisshow = !thisshow;
}
}
});
</script>
4 javascript 監聽動畫
<script src="/public/javascripts/vuejs"></script>
<style>
red {background-color: red; width: 100px; height: 100px;}
v-leave { margin-top: 50px; }
v-leave-active { transition: all 3s;}
v-leave-to { margin-top: 100px;}
</style>
<body>
<p id="app">
<transition
v-on:before-enter="beforeEnter"
v-on:enter="enter"
v-on:after-enter="afterEnter"
v-on:enter-cancelled="enterCancelled"
v-on:before-leave="beforeLeave"
v-on:leave="leave"
v-on:after-leave="afterLeave"
v-on:leave-cancelled="leaveCancelled"
>
<p class="red" v-show="show"></p>
</transition>
<button v-on:click="change">button</button>
</p>
<script>
new Vue({
el: '#app',
data: {
show: true
},
methods: {
change: function() {
thisshow = !thisshow;
consolelog('-----------click---------');
},
beforeEnter: function (el) {
consolelog('beforeEnter:');
},
enter: function (el, done) {
consolelog('enter:');
// done()
},
afterEnter: function (el) {
consolelog('afterEnter:');
},
enterCancelled: function (el) {
consolelog('enterCancelled:');
},
beforeLeave: function (el) {
consolelog('beforeLeave:');
},
leave: function (el, done) {
consolelog('leave:');
done()
},
afterLeave: function (el) {
consolelog('afterLeave:');
},
leaveCancelled: function (el) {
consolelog('leaveCancelled:');
}
}
});
</script>
5 頁面初始化時的動畫：
<script src="/public/javascripts/vuejs"></script>
<style>
@keyframes aslide {
0% {
margin-left: 10px;
}
100% {
margin-left: 100px;
}
}
red {background-color: red; width: 100px; height: 100px;}
apper { margin-top: 50px; }
apper-active { margin-top: 100px; animation: aslide 4s; transition: all 3s;}
</style>
<body>
<p id="app">
<transition
appear
appear-class="apper"
appear-active-class="apper-active"
v-on:before-appear="customBeforeAppearHook"
v-on:appear="customAppearHook"
v-on:after-appear="customAfterAppearHook" >
<p class="red" ></p>
</transition>
<button v-on:click="change">button</button>
</p>
<script>
new Vue({
el: '#app',
data: {
show: true
},
methods: {
change: function() {
thisshow = !thisshow;
consolelog('-----------click---------');
},
customBeforeAppearHook: function (el) {
consolelog('customBeforeAppearHook:');
},
customAppearHook: function (el) {
consolelog('customAppearHook:');
// done()
},
customAfterAppearHook: function (el) {
consolelog('customAfterAppearHook:');
}
}
});
</script>
<script src="/public/javascripts/vuejs"></script>
<style>
v-enter-active { transition: all 15s;}
v-enter-to { margin-top: 100px;}
v-leave-active { transition: all 15s;}
v-leave-to { margin-top: 10px;}
</style>
<body>
<p id="app">
<p class="show1">
<transition>
<button v-if="show1" @click="show1 = false">on</button>
<button v-else @click="show1 = true">off</button>
</transition>
</p>
<p class="show2">
<transition>
<button v-if="show2" key="on" @click="show2 = false">on</button>
<button v-else key="off" @click="show2 = true">off</button>
</transition>
</p>
</p>
<script>
var app = new Vue({
el: '#app',
data: {
show1: true,
show2: true
}
});
</script>before-appear appear after-appear 是事件回調，看事例相當清晰。
6 動畫元素的 key ：
<script src="/public/javascripts/vuejs"></script>
<style>
v-enter { margin-left: 100px;}
v-enter-active { transition: all 5s;}
v-enter-to { margin-left: 10px;}
v-leave { margin-left: 10px;}
v-leave-active { transition: all 5s;}
v-leave-to { margin-left: 100px;}
</style>
<body>
<p id="app">
<p class="default">
<transition>
<button v-if="show" key="on" @click="show = false">on</button>
<button v-else key="off" @click="show = true">off</button>
</transition>
</p>
<p class="inout">
<transition mode="in-out">
<button v-if="show" key="on" @click="show = false">on</button>
<button v-else key="off" @click="show = true">off</button>
</transition>
</p>
<p class="outin">
<transition mode="out-in">
<button v-if="show" key="on" @click="show = false">on</button>
<button v-else key="off" @click="show = true">off</button>
</transition>
</p>
</p>
<script>
var app = new Vue({
el: '#app',
data: {
show: true
}
});
</script>show1 為什麼沒有動畫效果呢？因為vue 會把切換中的兩個button 辨識成同一個元素，只是修改了button 中的不同內容，所以實際上頁面並沒有發生DOM 元素的切換；
###如果要讓vue明確辨識出這是2個不同的button 元素，則為每個元素指定不同的key 屬性的值。 ############7 元素切換的動畫模式：######<script src="/public/javascripts/vuejs"></script>
<style>
v-enter { margin-left: 100px;}
v-enter-active { transition: all 5s;}
v-enter-to { margin-left: 10px;}
v-leave { margin-left: 10px;}
v-leave-active { transition: all 5s;}
v-leave-to { margin-left: 100px;}
</style>
<body>
<p id="app">
<p class="default">
<transition>
<button v-if="show" key="on" @click="show = false">on</button>
<button v-else key="off" @click="show = true">off</button>
</transition>
</p>
<p class="inout">
<transition mode="in-out">
<button v-if="show" key="on" @click="show = false">on</button>
<button v-else key="off" @click="show = true">off</button>
</transition>
</p>
<p class="outin">
<transition mode="out-in">
<button v-if="show" key="on" @click="show = false">on</button>
<button v-else key="off" @click="show = true">off</button>
</transition>
</p>
</p>
<script>
var app = new Vue({
el: '#app',
data: {
show: true
}
});
</script>
transition 默认是同时执行2个元素的切换动画的，案例中红色的 off 按钮其实是会同时向左移动的，只是因为布局上没有脱离布局流，被 on 按钮顶住，无法移动；
mode="in-out" 可以使切换元素先执行将要显示元素的动画，再执行将要隐藏元素的动画；
mode="out-in" 可以使切换元素先执行将要隐藏元素的动画，再执行将要显示元素的动画；
8 多元素动画：
<script src="/public/javascripts/vuejs"></script>
<style>
v-enter { margin-left: 100px;}
v-enter-active { transition: all 2s;}
v-enter-to { margin-left: 10px;}
</style>
<body>
<p id="app">
<transition-group>
<li v-for="item in items" :key="item">{{item}}</li>
</transition-group>
<transition-group tag="ul">
<li v-for="item in items" :key="item">{{item}}</li>
</transition-group>
<button @click="itemspush(itemslength)">add</button>
</p>
<script>
var app = new Vue({
el: '#app',
data: {
items: [0,1]
}
});
</script>
transition 里面只能放置单个元素或使用 v-if v-show 切换的单个元素，要想使用多个元素的动画，必须使用 transition-group；
transition-group 默认会在 DOM 里渲染成 span 标签，可使用 tag="ul" 指定渲染成其他标签；
transition-group 必须为每一个子元素指定 key；
8 多元素的位移动画：
<script src="/public/javascripts/vuejs"></script>
<style>
v-move { transition: all 1s; }
</style>
<body>
<p id="app">
<transition-group tag="ul" >
<li v-for="item in items" :key="item">{{item}}</li>
</transition-group>
<button @click="itemsreverse()">reverse</button>
</p>
<script>
var app = new Vue({
el: '#app',
data: {
items: [0,1,2,3]
}
});
</script>
transition-group 允许在每个元素移动时，添加 v-move 的样式，移动完成后自动清除该样式；
transition 的属性， transition-group 都有，包括 name enter leave；
以上是vue元素實作動畫過渡效果實例詳解的詳細內容。更多資訊請關注PHP中文網其他相關文章！
