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Vue复刻华为官网 (二)

文章目录

1 推荐信息

在这里插入图片描述

1.1 思路

image-20221025165305610

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

<divclass="div_container"><divclass="div_title"><h2class="title_h2">推荐信息</h2></div><divclass="container_imgs"><divclass="div_row1"><divclass="row1_col1"><ahref=""class="col1_a1"@mouseenter="showDiv1(1)"@mouseleave="hideDiv1(1)"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/matebook-x-pro2.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="div2_hidden">
                  了解更多
                </div></div></a></div><divclass="row1_col2"@mouseenter="showDiv1(2)"@mouseleave="hideDiv1(2)"><ahref=""class="col1_a1"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/2.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="div2_hidden">
                  了解更多
                </div></div></a></div></div><divclass="div_row1"><divclass="row1_col2 "@mouseenter="showDiv1(3)"@mouseleave="hideDiv1(3)"><ahref=""class="col1_a1"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/3.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="div2_hidden">
                  了解更多
                </div></div></a></div><divclass="row1_col3"@mouseenter="showDiv1(4)"@mouseleave="hideDiv1(4)"><ahref=""class="col1_a1"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/4.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="div2_hidden">
                  了解更多
                </div></div></a></div></div><divclass="div_row3"><divclass="row1_col2 "@mouseenter="showDiv1(5)"@mouseleave="hideDiv1(5)"><ahref=""class="col1_a1"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/5.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="div2_hidden">
                  了解更多
                </div></div></a></div><divclass="row1_col2 col2_displacement"@mouseenter="showDiv1(6)"@mouseleave="hideDiv1(6)"><ahref=""class="col1_a1"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/6.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="div2_hidden">
                  了解更多
                </div></div></a></div><divclass="row1_col2 col2_displacement"@mouseenter="showDiv1(7)"@mouseleave="hideDiv1(7)"><ahref=""class="col1_a1"><divclass="a_div1"><divclass="mask"></div><imgsrc="@/assets/7.jpg"alt=""class="a1_img1"></div><divclass="a_div2"><divclass="div2_title">
                  产品
                </div><divclass="div2_info">
                  HUAWEI MateBook X Pro
                </div><divclass="div2_info2">
                  入目惊鸿
                </div><divclass="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。

image-20221025170551480

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

在这里插入图片描述

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)]

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

<divclass="div_bill"><imgsrc="@/assets/sanwenyu.jpg"class="bill_img"><buttonclass="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

在这里插入图片描述

3 新闻与活动

image-20221025172347691

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。

image-20221025172704217

当然这个也不是很难,大多数都是用过的知识。

image-20221025172910732

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

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methods:{showDiv2(value){var d1 = document.getElementsByClassName('info1')[value -1];
      d1.style.cssText ='background-color: rgba(242,242,242); ';var d3 = document.getElementsByClassName('main_img')[value -1];
      d3.style.cssText ='animation-name:showBigImg; animation-duration:0.5s;animation-fill-mode: forwards; '},hideDiv2(value){var d1 = document.getElementsByClassName('info1')[value -1];
      d1.style.cssText ='  background-color: rgba(248,248,248); ';var d3 = document.getElementsByClassName('main_img')[value -1];
      d3.style.cssText ='animation-name:cancelBigImg; animation-duration:0.5s;animation-fill-mode: forwards; '},changeColor(value){var d1 = document.getElementsByClassName('info_word')[value -1];
      d1.style.cssText ='  color: rgb(199, 0, 11);';var d3 = document.getElementsByClassName('info_time')[value -1];
      d3.style.cssText ='color: rgb(199, 0, 11);'},cancelColor(value){var d1 = document.getElementsByClassName('info_word')[value -1];
      d1.style.cssText =' color:#111111;  ';var d3 = document.getElementsByClassName('info_time')[value -1];
      d3.style.cssText ='color: #333;'}}
.div_news{width: 85.652%;margin: 0 auto;height: auto;margin-top: 5%;}.news_title{width: 100%;height: auto;margin-bottom: 5%;}.news_title h2{padding: 0 0;position: relative;width: 10%;margin: 0 auto;line-height: 40px;}.news_title h2::after{position: absolute;content:'';height: 2px;width: 47%;top: 100%;left: 25%;background-color: #c7000b;}.news_info{width: 100%;height: 65vh;position: relative;}.info1{width: 30%;float: left;height: 65vh;margin-right: 5%;background-color:rgba(248, 248, 248);cursor: pointer;}.info_main{width: 100%;height: auto;overflow: hidden;}.info_main img{width: 100%;height: 35vh;}.info_words{width: 100%;height: 30vh;}.words_container{padding: 5% 5%;width: 90%;height: 90%;/* display: inline-block; */}.container_first{width: 100%;height: auto;}.container_first span{font-size: 18px;font-weight: 600;line-height: 34px;}.container_second{width: 100%;font-size: 15px;margin-top: 3%;line-height: 30px;height: auto;}.container_third{width: 100%;font-size: 14px;margin-top: 5%;line-height: 23px;color: #555;}.info3{width: 30%;float: right;height: 65vh;position: relative;overflow: inherit;/* border-bottom: 1px solid red; */background-color:rgba(248, 248, 248);}.info_info1{padding: 3% 5%;width: 90%;height: auto;cursor: pointer;color: #666;}.info1_top{margin-top: 10%;}.info_word{padding: 0px 0px;margin: 0px 0px;font-size: 17px;color: #111111;}.info_time{color: inherit;}.info_title{width: 7%;height: 5vh;position: absolute;line-height: 5vh;top: 0;text-align: center;font-size: 10px;color: #ffffff;z-index: 2;background-color:rgba(90, 90, 90, 0.7);}.f2{width: 20%;}

3.3 效果图

[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-uzJvxyO1-1666695192054)(../../桌面文件/1012/Honeycam 2022-10-25 18-50-36.webp)]


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