时间:2021-07-01 10:21:17 帮助过:6人阅读
1 在 vue 中,使用 <transition>
标签包含着的单个子元素在使用 v-show
或 v-if
切换显示隐藏前,会先判断是否有对应的 class
样式能匹配到该子元素上:
<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> <div id="app"> <transition> <div class="red" v-show="show"></div> </transition> <button v-on:click="change">button</button> </div> <script> new Vue({ el: '#app', data: { show: true }, methods: { change: function(){ thisshow = !thisshow; } } }); </script> </script> </body>
事例中,当点击 button,div 并不会马上 display: none, 而是首先设置 v-leave ,下一刻即删除 v-leave ,同时添加 v-leave-active v-leave-to,当 v-leave-active 中的过渡时间执行完成,则删除 v-leave-active v-leave-to,同时添加 display: none。
事例中,当点击 button,div 马上清除 display: none, 然后设置 v-enter ,下一刻即删除 v-enter ,同时添加 v-enter-active v-enter-to,当 v-enter-active 中的过渡时间执行完成,则删除 v-enter-active v-enter-to。
2 自定义动画类名:
<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> <div id="app"> <transition name="slide"> <div class="red" v-show="show"></div> </transition> <button v-on:click="change">button</button> </div> <script> new Vue({ el: '#app', data: { show: true }, methods: { change: function(){ thisshow = !thisshow; } } }); </script>
该效果与上一例效果完全一致的,transition
元素可以使用 name
属性来指定使用的类名前缀,从而代替 v-
字段,例如事例中的 name="slide"
使本来的 v-enter
变成了 slide-enter
。
3 transition 与 animation 同时使用时
<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> <div id="app"> <transition type="transition" > <div class="red" v-show="show"></div> </transition> <br> <transition type="animation" > <div class="blue" v-show="show"></div> </transition> <button v-on:click="change">button</button> </div> <script> new Vue({ el: '#app', data: { show: true }, methods: { change: function(){ thisshow = !thisshow; } } }); </script>
事例中,动画同时指定了 transition 和 animation 动画, transition 元素的 type 属性可以指定以哪种动画的时间为元素的结束时间,如果不指定动画监控的方式,则会以最长时间的为准。
4 javascript 监听动画
<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> <div 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" > <div class="red" v-show="show"></div> </transition> <button v-on:click="change">button</button> </div> <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 页面初始化时的动画:
<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> <div 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" > <div class="red" ></div> </transition> <button v-on:click="change">button</button> </div> <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>
6 动画元素的 key :
<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> <div id="app"> <div class="show1"> <transition> <button v-if="show1" @click="show1 = false">on</button> <button v-else @click="show1 = true">off</button> </transition> </div> <div 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> </div> </div> <script> var app = new Vue({ el: '#app', data: { show1: true, show2: true } }); </script>
show1 为什么没有动画效果呢?因为 vue 会把切换中的两个 button 识别成同一个元素,只是修改了 button 中的不同内容,所以实际上页面并没有发生 DOM 元素的切换;
如果要让 vue 明确识别出这是2个不同的 button 元素,则为每个元素指定不同的 key 属性的值。
7 元素切换的动画模式:
<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> <div id="app"> <div 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> </div> <div 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> </div> <div 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> </div> </div> <script> var app = new Vue({ el: '#app', data: { show: true } }); </script>
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> <div 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> </div> <script> var app = new Vue({ el: '#app', data: { items: [0,1] } }); </script>
8 多元素的位移动画:
<script src="/public/javascripts/vuejs"></script> <style> v-move { transition: all 1s; } </style> <body> <div id="app"> <transition-group tag="ul" > <li v-for="item in items" :key="item">{{item}}</li> </transition-group> <button @click="itemsreverse()">reverse</button> </div> <script> var app = new Vue({ el: '#app', data: { items: [0,1,2,3] } }); </script>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。