h5页面背景图很长要有滚动条滑动效果实现代码
作者：袖梨
2022-06-25
本篇文章小编给大家分享一下h5页面背景图很长要有滚动条滑动效果实现代码，文章代码介绍的很详细，小编觉得挺不错的，现在分享给大家供大家参考，有需要的小伙伴们可以来看看。
背景图铺满页面，要求有滚动条可以滑动，思路是用js获取背景图片的高，在获取当前窗口的高，两者比较，当窗口的高小于背景图片的高，把窗口的高设置成背景颜色的高。反之就是窗口的高。
长背景图测试/title>
<style type="text/<a href="http://www.111com.net/cssdiv/css.html" target="_blank">css</a>">
//body里面的属性min-height是关键，网上说直接设置成100vh即可，如果不可以可以自己微调
body{
background:url(./images/download_bg.png) no-repeat;
background-size:100%;
//方案1
min-height: 185vh;
//方案2，本质等价于方案一,如果两个方案是同时开启，则会使用高度更小的那个，已测试
//
}
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margin-top: 150px;
text-align: center;
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</body>
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<p>
这是网上的代码。
</p>
<p>
改动了下
</p>
<pre class="brush:xhtml;">body{
background: -webkit-linear-gradient(to bottom , #699eef, #8e92ef);
background: -o-linear-gradient(to bottom , #699eef, #8e92ef);
background: -moz-linear-gradient(to bottom , #699eef, #8e92ef);
background: linear-gradient(to bottom , #699eef, #8e92ef);
}
.app {
width: 100%;
/* */
min-height: 120vh;
/* position: fixed; */
/* top: 0; */
/* left: 0; */
background: url('../../images/bg.jpg') no-repeat;
background-size: 100% auto;
}</pre>
<p>
给body加了个跟图片颜色一样的背景色
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