vue.js 实现点击展开收起动画效果

最近公司项目加了个页面,其中要求是这样的,点击对应列表,展开和收起,其实就是显示和隐藏内容部分;说来惭愧,我花了半天时间才搞出来(自黑一下~),接下来分享给大家,先上效果图:

vue.js 实现点击展开收起动画效果

vue页面:

<template> <div> <div v-for="(item,index) in items " > <div @click="showHide(index)"> <h3>2018年0{{index+6}}月</h3> <div>800笔<i></i></div> </div> <div> <ul> <li v-for="i in item.allNumber"> {{index+6}} </li> </ul> </div> </div> </div> </template> <script> export default{ data(){ return{ items:[ {v:'qqq',allNumber:1}, {v:'aaa',allNumber:2}, {v:'qqq',allNumber:3}, ], } }, created(){ document.body.style.backgroundColor = '#f6f6f6'; }, mounted(){ for(var i=0;i<3;i++){ //这里取值自后台返回的长度,设置页面渲染完成后是否展开,此处不展开 document.getElementsByClassName('contant')[i].style.height = '0px'; } }, components:{ }, methods:{ showHide(index){ //点击展开收起 let contant = document.getElementsByClassName('contant')[index]; //这里我们通过参数index来让浏览器判断你点击的是哪一个列表 let height = contant.getBoundingClientRect().height; //获取页面元素的当前高度 document.getElementsByTagName('i')[index].style.transform = !!height?'rotateX(0deg)':'rotateX(180deg)'; if (!!height) { contant.style.height = height + 'px'; let f = document.body.offsetHeight; //强制相应dom重绘,使最新的样式得到应用 contant.style.height = '0px'; } else { contant.style.height = 'auto'; height = contant.getBoundingClientRect().height; contant.style.height = '0'; let f = document.body.offsetHeight; contant.style.height = height + 'px'; } } }, beforeDestroy(){ document.body.style.backgroundColor = '#fff'; } } </script> <style type="text/scss" lang="scss" scoped> .dealRecord-wrap{margin-bottom: 100px; .title-contant{overflow: hidden; /* 这个是重点 */ .title{height: 84px;padding: 0 24px;border-bottom: 1px solid #eaeaea;/*px*/ h3{height: 84px;font-size: 28px;color: #333;display: flex;align-items: center;float: left;;margin-left: 10px;} .number{height: 84px;font-size: 24px;color: #666;display: flex;align-items: center;float: right;} .number i{display: inline-block;width: 23px;height: 13px;background: url('../../assets/images/icon_dropup@2x.png');background-repeat: no-repeat;background-size: 23px 13px;background-position: right 6px center;padding-right: 35px;display: flex;align-items: center; float: right;transform:rotateX(0deg);} } .contant{background: #fff;transition: height 1s; /* 这个也是重点 */ ul li{padding: 0 24px;height: 142px;display: flex;align-items: center;} ul li:not(:last-child){border-bottom: 1px solid #f6f6f6;/*px*/} } } } </style>

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