css动画效果有以下方式
1.automatically apply classes for CSS transitions and animations
2.integrate 3rd-party CSS animation libraries, such as Animate.css
3.use JavaScript to directly manipulate the DOM during transition hooks
4.integrate 3rd-party JavaScript animation libraries, such as Velocity.js
1.transition组件提供进入和移除动画
<div id="demo">
<button v-on:click="show = !show">
Toggle
</button>
<transition name="fade">
<p v-if="show">hello</p>
</transition>
</div>
//js
new Vue({
el: '#demo',
data: {
show: true
}
})
//css
.fade-enter-active, .fade-leave-active {
transition: opacity .5s
}
.fade-enter, .fade-leave-active {
opacity: 0
}
Paste_Image.png
有如下四个属性，v是在没有transition name的时候调用
v-enter
v-enter-active
v-leave
v-leave-active
Paste_Image.png
2.transition 进入和移除动画
<div id="example-1">
<button @click="show = !show">
Toggle render
</button>
<transition name="slide-fade">
<p v-if="show">hello</p>
</transition>
</div>
new Vue({
el: '#example-1',
data: {
show: true
}
})
/* Enter and leave animations can use different */
/* durations and timing functions. */
.slide-fade-enter-active {
transition: all .3s ease;
}
.slide-fade-leave-active {
transition: all .8s cubic-bezier(1.0, 0.5, 0.8, 1.0);
}
.slide-fade-enter, .slide-fade-leave-active {
padding-left: 10px;
opacity: 0;
}
3.CSS animations 方式相同
<div id="example-2">
<button @click="show = !show">Toggle show</button>
<transition name="bounce">
<p v-if="show">Look at me!</p>
</transition>
</div>
new Vue({
el: '#example-2',
data: {
show: true
}
})
.bounce-enter-active {
animation: bounce-in .5s;
}
.bounce-leave-active {
animation: bounce-out .5s;
}
@keyframes bounce-in {
0% {
transform: scale(0);
}
50% {
transform: scale(1.5);
}
100% {
transform: scale(1);
}
}
@keyframes bounce-out {
0% {
transform: scale(1);
}
50% {
transform: scale(1.5);
}
100% {
transform: scale(0);
}
}
Paste_Image.png
3.transition 组件增加属性
enter-class
enter-active-class
leave-class
leave-active-class
<link href="https://unpkg.com/animate.css@3.5.1/animate.min.css" rel="stylesheet" type="text/css">
<div id="example-3">
<button @click="show = !show">
Toggle render
</button>
<transition
name="custom-classes-transition"
enter-active-class="animated tada"
leave-active-class="animated bounceOutRight"
>
<p v-if="show">hello</p>
</transition>
</div>
new Vue({
el: '#example-3',
data: {
show: true
}
})
4.**JavaScript hooks
<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"
>
<!-- ... -->
</transition>
// ...
methods: {
// --------
// ENTERING
// --------
beforeEnter: function (el) {
// ...
},
// the done callback is optional when
// used in combination with CSS
enter: function (el, done) {
// ...
done()
},
afterEnter: function (el) {
// ...
},
enterCancelled: function (el) {
// ...
},
// --------
// LEAVING
// --------
beforeLeave: function (el) {
// ...
},
// the done callback is optional when
// used in combination with CSS
leave: function (el, done) {
// ...
done()
},
afterLeave: function (el) {
// ...
},
// leaveCancelled only available with v-show
leaveCancelled: function (el) {
// ...
}
}
一个Velocity.js动画
Velocity works very much like jQuery.animate and is
a great option for JavaScript animations
-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/velocity/1.2.3/velocity.min.js"></script>
<div id="example-4">
<button @click="show = !show">
Toggle
</button>
<transition
v-on:before-enter="beforeEnter"
v-on:enter="enter"
v-on:leave="leave"
v-bind:css="false"
>
<p v-if="show">
Demo
</p>
</transition>
</div>
new Vue({
el: '#example-4',
data: {
show: false
},
methods: {
beforeEnter: function (el) {
el.style.opacity = 0
},
enter: function (el, done) {
Velocity(el, { opacity: 1, fontSize: '1.4em' }, { duration: 300 })
Velocity(el, { fontSize: '1em' }, { complete: done })
},
leave: function (el, done) {
Velocity(el, { translateX: '15px', rotateZ: '50deg' }, { duration: 600 })
Velocity(el, { rotateZ: '100deg' }, { loop: 2 })
Velocity(el, {
rotateZ: '45deg',
translateY: '30px',
translateX: '30px',
opacity: 0
}, { complete: done })
}
}
})
Paste_Image.png
5.节点的初始渲染应用转换
添加class
<transition
appear
appear-class="custom-appear-class"
appear-active-class="custom-appear-active-class"
>
<!-- ... -->
</transition>
JavaScript钩子函数
<transition
appear
v-on:before-appear="customBeforeAppearHook"
v-on:appear="customAppearHook"
v-on:after-appear="customAfterAppearHook"
>
<!-- ... -->
</transition>
6.在不同元素之间切换动画
<transition>
<table v-if="items.length > 0">
<!-- ... -->
</table>
<p v-else>Sorry, no items found.</p>
</transition>
注意：如果是相同元素，比如都是table，需要绑定key
<transition>
<button v-if="docState === 'saved'" key="saved">
Edit
</button>
<button v-if="docState === 'edited'" key="edited">
Save
</button>
<button v-if="docState === 'editing'" key="editing">
Cancel
</button>
</transition>
等价于
<transition>
<button v-bind:key="docState">
{{ buttonMessage }}
</button>
</transition>
// ...
computed: {
buttonMessage: function () {
switch (docState) {
case 'saved': return 'Edit'
case 'edited': return 'Save'
case 'editing': return 'Cancel'
}
}
}
7.Transition Modes
in-out: New element transitions in first, then when complete, the current element transitions out.
out-in: Current element transitions out first, then when complete, the new element transitions in.
8.Transitioning Between Components
比较简单，直接用dynamic component 就可以了
<transition name="component-fade" mode="out-in">
<component v-bind:is="view"></component>
</transition>
new Vue({
el: '#transition-components-demo',
data: {
view: 'v-a'
},
components: {
'v-a': {
template: '<div>Component A</div>'
},
'v-b': {
template: '<div>Component B</div>'
}
}
})
.component-fade-enter-active, .component-fade-leave-active {
transition: opacity .3s ease;
}
.component-fade-enter, .component-fade-leave-active {
opacity: 0;
}
Paste_Image.png
9. transitioning entering and leaving
<div id="list-demo" class="demo">
<button v-on:click="add">Add</button>
<button v-on:click="remove">Remove</button>
<transition-group name="list" tag="p">
<span v-for="item in items" v-bind:key="item" class="list-item">
{{ item }}
</span>
</transition-group>
</div>
new Vue({
el: '#list-demo',
data: {
items: [1,2,3,4,5,6,7,8,9],
nextNum: 10
},
methods: {
randomIndex: function () {
return Math.floor(Math.random() * this.items.length)
},
add: function () {
this.items.splice(this.randomIndex(), 0, this.nextNum++)
},
remove: function () {
this.items.splice(this.randomIndex(), 1)
},
}
})
.list-item {
display: inline-block;
margin-right: 10px;
}
.list-enter-active, .list-leave-active {
transition: all 1s;
}
.list-enter, .list-leave-active {
opacity: 0;
transform: translateY(30px);
}
Paste_Image.png
10.List Move Transitions
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.14.1/lodash.min.js"></script>
<div id="flip-list-demo" class="demo">
<button v-on:click="shuffle">Shuffle</button>
<transition-group name="flip-list" tag="ul">
<li v-for="item in items" v-bind:key="item">
{{ item }}
</li>
</transition-group>
</div>
new Vue({
el: '#flip-list-demo',
data: {
items: [1,2,3,4,5,6,7,8,9]
},
methods: {
shuffle: function () {
this.items = _.shuffle(this.items)
}
}
})
.flip-list-move {
transition: transform 1s;
}
Paste_Image.png
11.交错转换
<script src="https://cdnjs.cloudflare.com/ajax/libs/velocity/1.2.3/velocity.min.js"></script>
<div id="staggered-list-demo">
<input v-model="query">
<transition-group
name="staggered-fade"
tag="ul"
v-bind:css="false"
v-on:before-enter="beforeEnter"
v-on:enter="enter"
v-on:leave="leave"
>
<li
v-for="(item, index) in computedList"
v-bind:key="item.msg"
v-bind:data-index="index"
>{{ item.msg }}</li>
</transition-group>
</div>
new Vue({
el: '#staggered-list-demo',
data: {
query: '',
list: [
{ msg: 'Bruce Lee' },
{ msg: 'Jackie Chan' },
{ msg: 'Chuck Norris' },
{ msg: 'Jet Li' },
{ msg: 'Kung Fury' }
]
},
computed: {
computedList: function () {
var vm = this
return this.list.filter(function (item) {
return item.msg.toLowerCase().indexOf(vm.query.toLowerCase()) !== -1
})
}
},
methods: {
beforeEnter: function (el) {
el.style.opacity = 0
el.style.height = 0
},
enter: function (el, done) {
var delay = el.dataset.index * 150
setTimeout(function () {
Velocity(
el,
{ opacity: 1, height: '1.6em' },
{ complete: done }
)
}, delay)
},
leave: function (el, done) {
var delay = el.dataset.index * 150
setTimeout(function () {
Velocity(
el,
{ opacity: 0, height: 0 },
{ complete: done }
)
}, delay)
}
}
})
Paste_Image.png
12.可以重用的动画组件
Vue.component('my-special-transition', {
template: '\
<transition\
name="very-special-transition"\
mode="out-in"\
v-on:before-enter="beforeEnter"\
v-on:after-enter="afterEnter"\
>\
<slot></slot>\
</transition>\
',
methods: {
beforeEnter: function (el) {
// ...
},
afterEnter: function (el) {
// ...
}
}
})
functional components
Vue.component('my-special-transition', {
functional: true,
render: function (createElement, context) {
var data = {
props: {
name: 'very-special-transition'
mode: 'out-in'
},
on: {
beforeEnter: function (el) {
// ...
},
afterEnter: function (el) {
// ...
}
}
}
return createElement('transition', data, context.children)
}
})
