1. 使用过渡类名
HTML结构:
<div id="app">
<input type="button" value="动起来" @click="myAnimate">
<!-- 使用 transition 将需要过渡的元素包裹起来 -->
<transition name="fade">
<div v-show="isshow">动画哦</div>
</transition>
</div>
VM 实例:
// 创建 Vue 实例,得到 ViewModel
var vm = new Vue({
el: '#app',
data: {
isshow: false
},
methods: {
myAnimate() {
this.isshow = !this.isshow;
}
}
定义两组类样式:
/* 定义进入和离开时候的过渡状态 */
.fade-enter-active,
.fade-leave-active {
transition: all 0.2s ease;
position: absolute;
}
/* 定义进入过渡的开始状态 和 离开过渡的结束状态 */
.fade-enter,
.fade-leave-to {
opacity: 0;
transform: translateX(100px);
}
案例:注意未起名默认是v
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router@3.0.0/dist/vue-router.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<style>
#app {
position: relative;
}
.circle {
font-size: 50px;
color: red;
}
#keng {
color: aqua;
font-size: 200px;
position: absolute;
top: 350px;
left: 225px;
width: 50px;
height: 50px;
}
.v-leave {
transform: translate(0px, 0px);
}
.v-leave-to {
transform: translate(300px, 500px);
}
.v-leave-active {
transition: all 2s;
}
.pool-enter-active,.pool-leave-active{
transition: all 2s;
}
</style>
</head>
<body>
<body>
<div id='app'>
<button @click="flag = !flag">加入购物车</button>
<transition >
<div class="circle" v-show="flag">☀</div>
</transition>
<transition name="pool">
<div id="keng" v-show="flag">🕳</div>
</transition>
</div>
<script>
const vm = new Vue({
el: '#app',
data: {
flag: true,
},
methods: {
},
})
</script>
</body>
</body>
</html>
2.使用第三方css动画库
<link href="https://cdn.bootcdn.net/ajax/libs/animate.css/4.1.1/animate.min.css" rel="stylesheet">
上面引入版本是4以上时的案例:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
//4以上的版本需要加animate__
<link href="https://cdn.bootcdn.net/ajax/libs/animate.css/4.1.1/animate.min.css" rel="stylesheet">
</head>
<body>
<div id='app'>
<button @click="show = !show">
阿斯塔特
</button>
<transition name="custom-classes-transition" enter-active-class="animate__animated animate__zoomOutDown"
leave-active-class="animated bounceOutRight">
<p v-if="show">第一军团没有秘密</p>
</transition>
</div>
<script>
const vm = new Vue({
el: '#app',
data: {
show: true
},
methods: {
},
})
</script>
</body>
</html>
<link href="https://cdn.bootcdn.net/ajax/libs/animate.css/3.1.1/animate.min.css" rel="stylesheet">
上面引入版本是4以下时的案例:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<link href="https://cdn.jsdelivr.net/npm/animate.css@3.5.1" rel="stylesheet" type="text/css">
</head>
<body>
<div id='app'>
<button @click="show = !show">
Toggle render
</button>
<transition
name="custom-classes-transition"
enter-active-class="animated slideInRight"
leave-active-class="animated bounceOutRight"
>
<p v-if="show">hello</p>
</transition>
</div>
<script>
const vm = new Vue({
el: '#app',
data: {
show: true
},
methods: {
},
})
</script>
</body>
</html>
3.使用动画钩子函数
定义 transition 组件以及三个钩子函数:
<div id="app">
<input type="button" value="切换动画" @click="isshow = !isshow">
<transition
@before-enter="beforeEnter"
@enter="enter"
@after-enter="afterEnter">
<div v-if="isshow" class="show">OK</div>
</transition>
</div>
定义三个 methods 钩子方法:
methods: {
beforeEnter(el) { // 动画进入之前的回调
el.style.transform = 'translateX(500px)';
},
enter(el, done) { // 动画进入完成时候的回调
el.offsetWidth;
el.style.transform = 'translateX(0px)';
done();
},
afterEnter(el) { // 动画进入完成之后的回调
this.isshow = !this.isshow;
}
}
定义动画过渡时长和样式:
.show{
transition: all 0.4s ease;
}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router@3.0.0/dist/vue-router.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<style>
.show{
transition: all 0.4s ease;
}
</style>
</head>
<body>
<div id='app'>
<input type="button" value="切换动画" @click="isshow = !isshow">
<transition @before-enter="beforeEnter" @enter="enter" @after-enter="afterEnter">
<div v-if="isshow" class="show">OK</div>
<div>121</div>
</transition>
</div>
<script>
const vm = new Vue({
el: '#app',
data: {
isshow:true
},
methods: {
beforeEnter(el) { // 动画进入之前的回调
el.style.color = 'red'
el.style.transform = 'translateX(500px)';
},
enter(el, done) { // 动画进入完成时候的回调
// 这个需要加
el.offsetWidth;
el.style.transform = 'translateX(0px)';
// 这个方法表示完成
done();
},
afterEnter(el) { // 动画进入完成之后的回调
// this.isshow = !this.isshow;
}
}
})
</script>
</body>
</html>
4.v-for的列表过渡
定义过渡样式:
<style>
.list-enter,
.list-leave-to {
opacity: 0;
transform: translateY(10px);
}
.list-enter-active,
.list-leave-active {
transition: all 0.3s ease;
}
</style>
定义DOM结构,其中,需要使用 transition-group 组件把v-for循环的列表包裹起来:
<div id="app">
<input type="text" v-model="txt" @keyup.enter="add">
<transition-group tag="ul" name="list">
<li v-for="(item, i) in list" :key="i">{{item}}</li>
</transition-group>
</div>
定义 VM中的结构:
// 创建 Vue 实例,得到 ViewModel
var vm = new Vue({
el: '#app',
data: {
txt: '',
list: [1, 2, 3, 4]
},
methods: {
add() {
this.list.push(this.txt);
this.txt = '';
}
}
});
案例:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<style>
.v-enter{
transform: translateX(-200px);
}
.v-enter-to{
transform: translateX(0px);
}
.v-enter-active{
transition: all 2s;
}
.v-leave{
transform: translateX(0px);
}
.v-leave-to{
transform: translateX(200px);
}
.v-leave-active{
transition: all 2s;
}
.box{
width: 500px;
margin: auto;
}
.v-move{
transition: all 0.8s ;
}
.v-leave-active{
position: absolute;
}
.v-enter-active{
position: absolute;
}
</style>
</head>
<body>
<div id='app'>
<button @click="flag = !flag"> 点我</button>
<button @click="changeList"> 点我2</button>
<transition-group tag="ul">
<div class="box" v-if="flag" v-for="item in list" :key="item">
{{item}}
</div>
</transition-group>
</div>
<script>
const vm = new Vue({
el: '#app',
data: {
flag:true,
list:[4,5,6,7,8,9]
},
methods: {
changeList(){
this.list.push(this.list[this.list.length-1] + 1)
}
},
})
</script>
</body>
</html>
5.列表的排序过渡
<transition-group>
组件还有一个特殊之处。不仅可以进入和离开动画,还可以改变定位。要使用这个新功能只需了解新增的 v-move
特性,它会在元素的改变定位的过程中应用。
v-move 和 v-leave-active 结合使用,能够让列表的过渡更加平缓柔和:
.v-move{
transition: all 0.8s ease;
}
.v-leave-active{
position: absolute;
}