文章目录
1 推荐信息1.1 思路1.2 代码1.3 知识补充1.4 效果图 2 宣传海报2.1 思路2.2 代码2.3 效果图 3 新闻与活动3.1 思路3.2 代码3.3 效果图
1 推荐信息
1.1 思路
看了这个gif后，可以清楚的看到产生了三个动画效果：图片"拉近"，"了解更多"从下往上显示出来，阴影。
我看了华为官网的源代码，发现图片本身就是有一个mask的，这样能让图片看起来暗一些，也就意味着，当鼠标进入的时候，只需要让mask的背景颜色更深一些，就实现了阴影的效果。至于图片"拉近"，我早就写过了，无非是把图片放大，然后超出盒子的不显示，这个也容易。但了解更多显现，难度就大了一些。我想了很久，最后只有通过位置，来把"了解更多"显示出来，想过用visibility: visible;但效果不太好，也想过用Vue的过渡效果，但是好像又不能同时产生三个效果。所以笨人先用笨法，先能实现再说。
1.2 代码
<div class="div_container"> <div class="div_title"> <h2 class="title_h2">推荐信息</h2> </div> <div class="container_imgs"> <div class="div_row1"> <div class="row1_col1"> <a href="" class="col1_a1" @mouseenter="showDiv1(1)" @mouseleave="hideDiv1(1)"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/matebook-x-pro2.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> <div class="row1_col2" @mouseenter="showDiv1(2)" @mouseleave="hideDiv1(2)"> <a href="" class="col1_a1"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/2.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> </div> <div class="div_row1"> <div class="row1_col2 " @mouseenter="showDiv1(3)" @mouseleave="hideDiv1(3)"> <a href="" class="col1_a1"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/3.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> <div class="row1_col3" @mouseenter="showDiv1(4)" @mouseleave="hideDiv1(4)"> <a href="" class="col1_a1"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/4.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> </div> <div class="div_row3"> <div class="row1_col2 " @mouseenter="showDiv1(5)" @mouseleave="hideDiv1(5)"> <a href="" class="col1_a1"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/5.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> <div class="row1_col2 col2_displacement" @mouseenter="showDiv1(6)" @mouseleave="hideDiv1(6)"> <a href="" class="col1_a1"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/6.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> <div class="row1_col2 col2_displacement" @mouseenter="showDiv1(7)" @mouseleave="hideDiv1(7)"> <a href="" class="col1_a1"> <div class="a_div1"> <div class="mask"></div> <img src="@/assets/7.jpg" alt="" class="a1_img1"> </div> <div class="a_div2"> <div class="div2_title"> 产品 </div> <div class="div2_info"> HUAWEI MateBook X Pro </div> <div class="div2_info2"> 入目惊鸿 </div> <div class="div2_hidden"> 了解更多 </div> </div> </a> </div> </div> </div> </div>这里需要提一下，由于需要操作的是多个div，我用了根据类名操作Dom的方式，所以需要传一下是第几个Dom
methods: { showDiv1(value) { var d1 = document.getElementsByClassName('a_div2')[value - 1]; // alert("悬浮上来了") d1.style.cssText = 'animation-name:example; animation-duration:0.5s;animation-fill-mode: forwards;z-index:3;' var d3 = document.getElementsByClassName('a1_img1')[value - 1]; d3.style.cssText = 'animation-name:showBigImg2; animation-duration:0.5s;animation-fill-mode: forwards; ' var d2 = document.getElementsByClassName('mask')[value - 1]; d2.style.cssText = ' z-index:2; background: linear-gradient(rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.4) 70%);' }, hideDiv1(value) { var d1 = document.getElementsByClassName('a_div2')[value - 1]; d1.style.cssText = ' animation-name:backwards; animation-duration:0.5s;animation-fill-mode: forwards;z-index:3;'; var d3 = document.getElementsByClassName('a1_img1')[value - 1]; d3.style.cssText = 'animation-name:cancelBigImg2; animation-duration:0.5s;animation-fill-mode: forwards; ' var d2 = document.getElementsByClassName('mask')[value - 1]; d2.style.cssText = 'background: linear-gradient(rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.3) 70%);z-index:2;' // d1.style.cssText = ' animation-name:backwards; animation-duration:0.5s;animation-fill-mode: forwards;'; } }要记得设置一下mask的z-index级别（比图片大即可），不然在图片放大的过程中，mask会被遮挡住，这样就实现不了阴影的效果，而且很突兀。
.div_container { width: 85.652%; /* border: 1px solid; */ margin: 0 auto; text-align: center;}.div_title { width: 100%; height: 100%; margin-bottom: 5%;}.title_h2 { width: 10%; height: 90%; padding-bottom: 8px; font-size: 30px; margin: 0 auto; position: relative;}.title_h2::after { position: absolute; content: ''; height: 2px; width: 47%; top: 100%; left: 27%; background-color: #c7000b;}.container_imgs { height: auto; width: 100%;}.div_row1 { height: auto; width: 100%; display: flex; margin-bottom: 30px !important; overflow: hidden;}.div_row3 { height: auto; width: 100%; display: flex; margin-bottom: 30px !important;}.row1_col1 { width: 836.98px; height: auto; position: relative; margin-right: 30px; z-index: 3;}.row1_col3 { width: 836.98px; height: auto; position: relative; margin-left: 30px; z-index: 3;}.col1_a1 { width: 100%; height: auto;}.a1_img1 { width: 100%; height: 100%;}.a_div1 { width: 100%; height: 100%; overflow: hidden;}.mask { position: absolute; top: 30%; width: 100%; height: 70%; opacity: 1; background: linear-gradient(rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.3) 70%);}.row1_col2 { width: 403.24px; height: auto; position: relative; overflow: hidden; z-index: 3; /* border: 2px solid sienna; */}.col2_displacement { margin-left: 30px;}/* 从-30px到10px */.a_div2 { width: 90%; height: auto; padding: 0% 5%; bottom: -30px; position: absolute; display: inline-block; left: 0px; /* border: 1px solid purple; */ text-align: left;}.div2_title { font-size: 1em; line-height: 1.0em; margin-bottom: 10px; color: white;}.div2_info { font-size: 1.3em; line-height: 1.4em; font-weight: 600; margin-bottom: 10px; color: white;}.div2_info2 { font-size: 1em; line-height: 1.0em; margin-bottom: 20px; color: rgb(198, 199, 199);}.div2_hidden { color: white; height: 20px; line-height: 20px; visibility: visible; margin-bottom: 10px;}1.3 知识补充
在写这个效果的时候，我遇到了一个很大的问题，就是鼠标一旦离开这个框（如下）的位置，动画效果就会被取消。我尝试了各种方法都无济于事。起初我以为是子组件遮挡住了父组件导致，所以一度往如何让子组件彻底变成父组件的一部分上思考。但后来搜索Vue中的鼠标事件的时候，得到了解决。
原因是因为最开始我用了mouseout鼠标事件，而mouseout事件一旦离开父元素或者子元素都会触发，所以鼠标离开子元素的时候，也会触发父元素上的mouseout鼠标事件，但是mouseleave则不同，只有离开被选元素的时候，才会触发效果，这样遇到的问题就被完美解决了。
1.4 效果图
2 宣传海报
![[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-dk3ddPZr-1666695192048)(https://gitee.com/you-tanzhi/pic/raw/master/image-20221025171927659.png)]](http://zhangshiyu.com/zb_users/upload/2022/10/20221028081002166691580234738.png)
2.1 思路
这个实现起来很容易，"了解更多"按钮和父组件分别使用position:absolute , position:relative，然后"了解更多"按钮相对于父组件定位，利用top和left(或者bottom、right)定位，将其放置在合适的位置。
至于"了解更多"的悬浮效果，则通过:hover即可实现
2.2 代码
<div class="div_bill"> <img src="@/assets/sanwenyu.jpg" class="bill_img"> <button class="img_btn">了解更多</button></div>.div_bill { width: 100%; margin-top: 7%; height: auto; position: relative;}.bill_img { width: 100%; height: auto;}.img_btn { z-index: 100; width: 170px; height: 42px; position: absolute; border: 1px solid #ffffff; left: 50.6%; top: 65%; color: #ffffff; cursor: pointer; /* opacity: 1; */ background-color: rgba(11, 11, 11, 0);}.img_btn:hover { background-color: rgb(199, 0, 11); border: 0px; color: #fff;}2.3 效果图
3 新闻与活动
3.1 思路
首先是分成三个组件,宽度为30%,中间两个间距分别为5%。
第一第二两个组件的形式一样，都是分成三大部分：展会活动、图片、内容信息。
其中展会活动很显然用到了相对父组件定位，图片和内容使用普通定位即可
另外，当鼠标悬浮上去的时候，图片会被拉近，而内容信息的颜色会变深一些。
当然这个也不是很难，大多数都是用过的知识。
对于第三个组件，相对复杂一些。所谓相对复杂，也不过是因为一个hover实现不了这个效果。因为如果用悬浮的话，要求两个字体的color都需要继承父组件，但是这样的话，就不能保证两个字体的颜色不同，所以需要用到一个鼠标事件，对两者的Dom进行操作实现。
3.2 代码
<div class="div_news"> <div class="news_title"> <h2>新闻与活动</h2> </div> <div class="news_info"> <div class="info1" @mouseenter="showDiv2(1)" @mouseleave="hideDiv2(1)"> <div class="info_title">展会活动</div> <div class="info_main"> <img src="@/assets/info1.jpg" alt="" class="main_img"> <div class="info_words"> <div class="words_container"> <div class="container_first"> <span>华为全联接大会2022</span> </div> <div class="container_second"> <span> <svg t="1666685534558" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="3562" width="16" height="16"> <path d="M512 960.13L251.06 699.11c-71.15-70.33-110.32-164.02-110.32-263.99 0-204.71 166.55-371.25 371.25-371.25s371.25 166.54 371.25 371.25c0 100.04-39.22 193.8-110.46 264.13l-1.19 1.26L512 960.13z m0-832.29c-169.44 0-307.28 137.85-307.28 307.28 0 83.11 32.72 160.99 92.12 219.29l1.84 1.96L512 869.66l215.16-215.25c59.4-58.29 92.12-136.17 92.12-219.29 0-169.43-137.84-307.28-307.28-307.28z" p-id="3563"></path> <path d="M512 590.36c-91.72 0-166.34-74.63-166.34-166.35S420.28 257.66 512 257.66c91.73 0 166.36 74.63 166.36 166.35S603.73 590.36 512 590.36z m0-268.73c-56.45 0-102.37 45.93-102.37 102.38S455.55 526.39 512 526.39s102.38-45.93 102.38-102.38S568.45 321.63 512 321.63z" p-id="3564"></path> </svg> 线上直播 & 深圳 <svg t="1666685766326" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="4521" width="16" height="16" style="margin-left:5%;" > <path d="M840.691358 63.209877h-50.567901V25.283951a25.283951 25.283951 0 0 0-50.567901 0v37.925926H284.444444V25.283951a25.283951 25.283951 0 0 0-50.567901 0v37.925926H183.308642a176.987654 176.987654 0 0 0-176.987654 176.987654v606.814815a176.987654 176.987654 0 0 0 176.987654 176.987654h657.382716a176.987654 176.987654 0 0 0 176.987654-176.987654v-606.814815a176.987654 176.987654 0 0 0-176.987654-176.987654z m126.419753 783.802469a126.419753 126.419753 0 0 1-126.419753 126.419753H183.308642a126.419753 126.419753 0 0 1-126.419753-126.419753v-455.111111h910.222222z m0-505.679013H56.888889v-101.135802a126.419753 126.419753 0 0 1 126.419753-126.419753h50.567901V176.987654a25.283951 25.283951 0 0 0 50.567901 0V113.777778h455.111112V176.987654a25.283951 25.283951 0 0 0 50.567901 0V113.777778h50.567901a126.419753 126.419753 0 0 1 126.419753 126.419753z" p-id="4522"></path> <path d="M257.643457 613.135802h510.482963a23.766914 23.766914 0 0 0 0-47.280987H257.643457a23.766914 23.766914 0 0 0 0 47.533827zM257.643457 815.407407h510.482963a23.766914 23.766914 0 1 0 0-47.280987H257.643457a23.766914 23.766914 0 0 0 0 47.533827z" p-id="4523"></path> </svg> 2022年11月7日 - 9日 </span> </div> <div class="container_third"> <span> 华为全联接大会2022之旅中国站将在深圳正式开启，本届大会的主题为“释放数字生产力”。 </span> </div> </div> </div> </div> </div> <div class="info1" @mouseenter="showDiv2(2)" @mouseleave="hideDiv2(2)"> <div class="info_title">展会活动</div> <div class="info_main"> <img src="@/assets/mbbf2022-cn2.jpg" alt="" class="main_img"> <div class="info_words"> <div class="words_container"> <div class="container_first"> <span>2020全球移动宽带论坛</span> </div> <div class="container_second"> <span> <svg t="1666685534558" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="3562" width="16" height="16"> <path d="M512 960.13L251.06 699.11c-71.15-70.33-110.32-164.02-110.32-263.99 0-204.71 166.55-371.25 371.25-371.25s371.25 166.54 371.25 371.25c0 100.04-39.22 193.8-110.46 264.13l-1.19 1.26L512 960.13z m0-832.29c-169.44 0-307.28 137.85-307.28 307.28 0 83.11 32.72 160.99 92.12 219.29l1.84 1.96L512 869.66l215.16-215.25c59.4-58.29 92.12-136.17 92.12-219.29 0-169.43-137.84-307.28-307.28-307.28z" p-id="3563"></path> <path d="M512 590.36c-91.72 0-166.34-74.63-166.34-166.35S420.28 257.66 512 257.66c91.73 0 166.36 74.63 166.36 166.35S603.73 590.36 512 590.36z m0-268.73c-56.45 0-102.37 45.93-102.37 102.38S455.55 526.39 512 526.39s102.38-45.93 102.38-102.38S568.45 321.63 512 321.63z" p-id="3564"></path> </svg> 泰国，曼谷 <svg t="1666685766326" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="4521" width="16" height="16" style="margin-left:5%;"> <path d="M840.691358 63.209877h-50.567901V25.283951a25.283951 25.283951 0 0 0-50.567901 0v37.925926H284.444444V25.283951a25.283951 25.283951 0 0 0-50.567901 0v37.925926H183.308642a176.987654 176.987654 0 0 0-176.987654 176.987654v606.814815a176.987654 176.987654 0 0 0 176.987654 176.987654h657.382716a176.987654 176.987654 0 0 0 176.987654-176.987654v-606.814815a176.987654 176.987654 0 0 0-176.987654-176.987654z m126.419753 783.802469a126.419753 126.419753 0 0 1-126.419753 126.419753H183.308642a126.419753 126.419753 0 0 1-126.419753-126.419753v-455.111111h910.222222z m0-505.679013H56.888889v-101.135802a126.419753 126.419753 0 0 1 126.419753-126.419753h50.567901V176.987654a25.283951 25.283951 0 0 0 50.567901 0V113.777778h455.111112V176.987654a25.283951 25.283951 0 0 0 50.567901 0V113.777778h50.567901a126.419753 126.419753 0 0 1 126.419753 126.419753z" p-id="4522"></path> <path d="M257.643457 613.135802h510.482963a23.766914 23.766914 0 0 0 0-47.280987H257.643457a23.766914 23.766914 0 0 0 0 47.533827zM257.643457 815.407407h510.482963a23.766914 23.766914 0 1 0 0-47.280987H257.643457a23.766914 23.766914 0 0 0 0 47.533827z" p-id="4523"></path> </svg> 2022年10月25日 - 26日 </span> </div> <div class="container_third"> <span> 2022全球移动宽带论坛将携手产业合作伙伴GSMA和GTI于10月25-26日在泰国曼谷举办，本届大会主题为“5G引领飞跃 | 5G Leads the Stride”。 </span> </div> </div> </div> </div> </div> <div class="info3"> <div class="info_title f2">新闻</div> <div class="info_main"> <div class="info_info1 info1_top" @mouseenter="changeColor(1)" @mouseleave="cancelColor(1)"> <h4 class="info_word"> 5G引领飞跃 </h4> <div class="info_time"> 2022年10月24日 </div> </div> <div class="info_info1" @mouseenter="changeColor(2)" @mouseleave="cancelColor(2)"> <h4 class="info_word"> 中国联通和华为共同荣获5G World峰会“5G专网产业领导力奖” </h4> <div class="info_time"> 2022年10月24日 </div> </div> <div class="info_info1" @mouseenter="changeColor(3)" @mouseleave="cancelColor(3)"> <h4 class="info_word"> 华为发布麦克斯韦平台和X2天线，助力5G高效部署 </h4> <div class="info_time"> 2022年10月24日 </div> </div> <div class="info_info1" @mouseenter="changeColor(4)" @mouseleave="cancelColor(4)"> <h4 class="info_word"> 50G PON引领创新，华为荣获2022世界宽带论坛“卓越FTTH解决方案”大奖 </h4> <div class="info_time"> 2022年10月24日 </div> </div> <div class="info_info1" @mouseenter="changeColor(5)" @mouseleave="cancelColor(5)"> <h4 class="info_word"> 华为主存储连续7年入选Gartner领导者象限 </h4> <div class="info_time"> 2022年10月24日 </div> </div> </div> </div> </div> </div>methods:{ showDiv2(value) { var d1 = document.getElementsByClassName('info1')[value - 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