这个组件当初自己也搞了很久,最后因为不知道隐藏层的高度没有使用css实现效果,可以参考element-ui通过overflow获取高度的方法创建了一个函数式组件实现了效果: const elTransition = '0.3s height ease-in-out, 0.3s padding-top ease-in-out, 0.3s padding-bottom ease-in-out' const Transition = { 'before-enter' (el) { el.style.transition = elTransition if (!el.dataset) el.dataset = {} el.dataset.oldPaddingTop = el.style.paddingTop el.dataset.oldPaddingBottom = el.style.paddingBottom el.style.height = 0 el.style.paddingTop = 0 el.style.paddingBottom = 0 }, 'enter' (el) { el.dataset.oldOverflow = el.style.overflow if (el.scrollHeight !== 0) { el.style.height = el.scrollHeight + 'px' el.style.paddingTop = el.dataset.oldPaddingTop el.style.paddingBottom = el.dataset.oldPaddingBottom } else { el.style.height = '' el.style.paddingTop = el.dataset.oldPaddingTop el.style.paddingBottom = el.dataset.oldPaddingBottom } el.style.overflow = 'hidden' }, 'after-enter' (el) { el.style.transition = '' el.style.height = '' el.style.overflow = el.dataset.oldOverflow }, 'before-leave' (el) { if (!el.dataset) el.dataset = {} el.dataset.oldPaddingTop = el.style.paddingTop el.dataset.oldPaddingBottom = el.style.paddingBottom el.dataset.oldOverflow = el.style.overflow el.style.height = el.scrollHeight + 'px' el.style.overflow = 'hidden' }, 'leave' (el) { if (el.scrollHeight !== 0) { el.style.transition = elTransition el.style.height = 0 el.style.paddingTop = 0 el.style.paddingBottom = 0 } }, 'after-leave' (el) { el.style.transition = '' el.style.height = '' el.style.overflow = el.dataset.oldOverflow el.style.paddingTop = el.dataset.oldPaddingTop el.style.paddingBottom = el.dataset.oldPaddingBottom } } export default { name: 'collapseTransition', functional: true, render (h, { children }) { const data = { on: Transition } return h('transition', data, children) } } 然后就可以在需要的地方当做组件使用(不再需要css与其它逻辑): <!-- 隐藏部分 -------------------------- --> <collapse-transition> <div class="collapse-wrap" v-show="isActive"> <!-- @slot default --> <slot></slot> </div> </collapse-transition>
给你个demo吧 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> .box{ height:500px; background-color:black; overflow: hidden; } .mybox-leave-active,.mybox-enter-active{ transition: all 1s ease; } .mybox-leave-active,.mybox-enter{ height:0px !important; } .mybox-leave,.mybox-enter-active{ height: 500px; } </style> </head> <body> <div id="box"> <transition name="mybox"> <div class="box" v-show="boxshow"></div> </transition> <button @click="togglebox">按钮</button> </div> </body> <script src="../bower_components/vue/dist/vue.js"></script> <script> new Vue({ el:'#box', data:{ boxshow:false }, methods:{ togglebox:function(){ this.boxshow = !this.boxshow; } } }); </script> </html>
用动画试试看: <transition name="router-slid"> //需要动画的内容 </transition> css: .router-slid-enter-active, .router-slid-leave-active { transition: all .4s; } .router-slid-enter, .router-slid-leave-active { transform: translate3d(0, 3rem, 0); opacity: 0; }
vue transition很容易的说。 用max-height效果最佳 in .vue: <transition name="sub-comments"> <div>...</div> </transition> in css: .sub-comments-leave-active,.sub-comments-enter-active { transition: max-height 0.3s; } .sub-comments-enter,.sub-comments-leave-to { max-height:0 ; } .sub-comments-enter-to,.sub-comments-leave { max-height: 4rem ; }
补充一种情况: ul>li的情况,容器高度一般没有值(取决于元素的累加高度,或者其他情况),这种情况需要使用js的方式实现,height = 0 ,最终状态可以通过e.scrollHeight求到需要高度,这个属性很关键,宽度未知的情况也类似,参考crollHeight mdn例子: https://codepen.io/huoguozhan...
可以参考这个,基本就是这样,你稍微调下样式就可以了 <template> <div class="panel"> <!-- body --> <transition name="panel-fade" @enter="enter" @before-leave="beforeLeave" @leave="leave" > <div class="panel__body" v-show="ifShowBody"> <slot></slot> </div> </transition> <!-- footer --> <div class="panel__footer" > <slot name="header">更多</slot> <i v-if="showIcon" class="panel__header__icon" :class="{[`arrow--${iconClass}`]: true}" @click="iconClick"></i> </div> </div> </template> <script> import velocity from 'velocity-animate' export default { name: "ezy-panel", props: { showIcon: { type: Boolean, default: true } }, data() { return { iconClass: 'up', bodyHeight: 0 } }, computed: { ifShowBody() { var c = true; switch (this.iconClass) { case 'up': c = true break; case 'down': c = false break; } return c } }, methods: { iconClick() { var self = this; switch (this.iconClass) { case 'up': this.iconClass = 'down'; break; case 'down': this.iconClass = 'up'; break; } }, enter(el, done){ var self = this; velocity(el, { height: self.bodyHeight + 'px' }, { duration: 500 , complete: done}) }, beforeLeave(el,done){ this.bodyHeight = el.clientHeight; }, leave(el, done) { el.style.height = el.clientHeight + 'px'; velocity(el, { height: '0px' }, { duration: 500 , complete: done}) } } } 用的时候,直接写主体部分可以,尾部的展开收缩,在组件里有了。 <panel> /* 直接写主体部分 * <div>...</div> */ </panel>
上面的都能实现 ,其实大致思路都一样.附上另一种写法 vue部分 <divclass="moreInfo" @click="boxshow = !boxshow"> 展开 </div> <div :class="boxshow==true?'box':'boxHidden' " ></div> //boxshow默认为false css部分 .box { height:200px; width: 100%; background-color:black; transition: all 0.5s ease-in-out; } .boxHidden{ transition: all 1s ease-in-out; height: 0; overflow: hidden; }
这个组件当初自己也搞了很久,最后因为不知道隐藏层的高度没有使用css实现效果,可以参考element-ui通过overflow获取高度的方法创建了一个函数式组件实现了效果:
然后就可以在需要的地方当做组件使用(不再需要css与其它逻辑):
给你个demo吧
用动画试试看:
css:
vue transition很容易的说。 用max-height效果最佳
补充一种情况: ul>li的情况,容器高度一般没有值(取决于元素的累加高度,或者其他情况),这种情况需要使用js的方式实现,height = 0 ,最终状态可以通过e.scrollHeight求到需要高度,这个属性很关键,宽度未知的情况也类似,参考crollHeight mdn
例子: https://codepen.io/huoguozhan...
可以参考这个,基本就是这样,你稍微调下样式就可以了
用的时候,直接写主体部分可以,尾部的展开收缩,在组件里有了。
上面的都能实现 ,其实大致思路都一样.附上另一种写法
变量控制状态:
外部控制height,overflow:hidden
内部控制一个transform:translateY