一、Html前端鼠标滑过控制内容展示
方案1,使用Hover伪类控制元素内部展示和隐藏
一般遇到会遇到问题的代码如下,初学者常遇到:
1.弹出层在z轴顺序问题,z-index
2.鼠标滑过按钮和展示内容中间,弹出层隐藏问题
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
a {
color: inherit;
text-decoration: none;
}
.list {
border: 1px solid red;
padding: 15px 50px;
}
.list .item {
background: blueviolet;
color: white;
width: 100px;
height: 30px;
text-align: center;
line-height: 30px;
position: relative;
z-index: 10;
margin-bottom: 30px;
}
.list .item:hover {
background: rgb(116, 25, 201);
}
.list .item:hover .prop {
display: block;
}
.list .item a {
display: block;
}
.prop {
border: 0px solid blue;
background: white;
color: black;
padding: 15px 20px;
width: 150px;
position: absolute;
left: 50%;
transform: translateX(-50%);
text-align: left;
box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.3);
border-radius: 5px;
z-index: 100;
top: 52px;
display: none;
}
.prop .angile {
width: 30px;
height: 30px;
border: 1px solid #ddd;
border-right: 0px;
border-bottom: 0px;
position: absolute;
top: -15px;
background: white;
left: 50%;
transform: translateX(-50%) rotate(45deg);
z-index: -1;
}
.prop .title {
font-size: 16px;
}
.prop .keywords {
font-size: 13px;
color: #aaa;
}
</style>
</head>
<body>
<!-- HTML鼠标滑过显示内容处理 -->
<div class="list">
<div class="item">
<a href="http://www.jnqianle.cn" target="_blank">千乐微云</a>
<div class="prop">
<div class="title">济南小程序开发</div>
<div class="keywords">济南小程序开发,济南网站开发,济南App开发</div>
<div class="angile"></div>
</div>
</div>
<div class="item">
<a href="http://www.jnqianle.cn" target="_blank">千乐微云</a>
<div class="prop">
<div class="title">济南小程序开发</div>
<div class="keywords">济南小程序开发,济南网站开发,济南App开发</div>
<div class="angile"></div>
</div>
</div>
<div class="item">
<a href="http://www.jnqianle.cn" target="_blank">千乐微云</a>
<div class="prop">
<div class="title">济南小程序开发</div>
<div class="keywords">济南小程序开发,济南网站开发,济南App开发</div>
<div class="angile"></div>
</div>
</div>
</div>
</body>
</html>
View Code
二、解决问题1,弹出层z轴顺序问题
方案:
item父元素不使用定位
prop弹出元素使用定位
默认z-index顺序:
1.z-index:的默认循序,后出现的默认值更大,显示在上层
2.定位的元素,z-index的默认值更大;比没有定位的元素
代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.list {
border: 1px solid red;
padding: 30px 100px;
}
.list .item {
border: 1px solid blue;
padding: 15px 20px;
width: 60px;
display: inline-block;
background: gray;
}
.list .item:hover .prop {
display: block;
}
.prop {
box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.3);
width: 200px;
padding: 15px;
position: absolute;
/* left: 50%; */
/* top: 65px; */
/* transform: translateX(-50%); */
display: none;
word-wrap: break-word;
background: white;
margin-top: 30px;
margin-left: -90px;
}
.prop .angle {
width: 20px;
height: 20px;
position: absolute;
border: 1px solid #ccc;
border-right: 0px;
border-bottom: 0px;
background: white;
left: 50%;
top: -10px;
transform: translateX(-50%) rotate(45deg);
border-radius: 5px;
}
</style>
</head>
<body>
<!--
1.z-index:的默认循序,后出现的默认值更大,显示在上层
2.定位的元素,z-index的默认值更大;比没有定位的元素
-->
<div class="list">
<div class="item">
<div class="btn">电话</div>
<div class="prop">
电话电话电话电话电话电话电话电话
<div class="angle"></div>
</div>
</div>
<div class="item">
<div class="btn">微信</div>
<div class="prop">
微信微信微信微信微信
<div class="angle"></div>
</div>
</div>
<div class="item">
<div class="btn">QQ</div>
<div class="prop">
QQQQQQQQQQQQQQQQQQQQQQQQ
<div class="angle"></div>
</div>
</div>
</div>
<p>
电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话
</p>
<p>
电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话
</p>
<p>
电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话
</p>
<p>
电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话
</p>
<p>
电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话
</p>
<p>
电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话电话
</p>
</body>
</html>
View Code
效果:
三、解决问题2,鼠标滑过按钮和弹出层缝隙隐藏问题
方案:
布局时候,不留缝隙,样式展示出来的部分可以出现缝隙。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.list {
border: 1px solid red;
padding: 30px 50px;
}
.list .item {
border: 1px solid blue;
padding: 15px 20px;
width: 60px;
position: relative;
}
.list .item:hover .prop {
display: block;
}
.prop {
position: absolute;
width: 200px;
left: 100px;
border: 0px solid red;
top: 50%;
transform: translateY(-50%);
word-wrap: break-word;
display: none;
}
.prop-panel {
box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.3);
padding: 15px;
position: relative;
left: 20px;
border-radius: 5px;
}
.prop .angle {
width: 20px;
height: 20px;
position: absolute;
border: 1px solid #ccc;
border-right: 0px;
border-top: 0px;
background: white;
left: -11px;
top: 50%;
transform: translateY(-50%) rotate(45deg);
}
</style>
</head>
<body>
<!--
方案一:增加内部的辅助填空
方案二; 布局时候增加隐藏外部
-->
<div class="list">
<div class="item">
<div class="btn">电话</div>
<div class="prop">
<div class="prop-panel">
电话电话电话电话电话电话电话电话
<div class="angle"></div>
</div>
</div>
</div>
<div class="item">
<div class="btn">微信</div>
<div class="prop">
<div class="prop-panel">
微信微信微信微信微信
<div class="angle"></div>
</div>
</div>
</div>
<div class="item">
<div class="btn">QQ</div>
<div class="prop">
<div class="prop-panel">
QQQQQQQQQQQQQQQQQQQQQQQQ
<div class="angle"></div>
</div>
</div>
</div>
</div>
</body>
</html>
View Code
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