Pure CSS to achieve Tab page switching effect
This time I will bring you pure CSS to achieve the Tab page switching effect. What are the precautions to achieve the Tab page switching effect with pure CSS? The following is a practical case, let's take a look.
When I cut a page recently, it involved a tab switching part. Because I didn’t want to use js, I thought about whether I could use a pure CSS selector to achieve the switching effect. After searching, there are roughly three ways of writing: 1. Use:hover selectorDisadvantages: The effect is only effective when the mouse is on the element, and the effect of selecting and displaying a certain one by default cannot be achieved2. Using the anchor point of the a tag + :target selectorDisadvantages: Because the anchor point will scroll the selected element to the top of the page, it needs to be moved every time the position is switched, and the experience is extremely poor. 3. Use the binding relationship between label and radio and the :checked when radio is selected to achieve the effectDisadvantages: HTML structural elements are more complex
- Binding label and radio: Needless to say binding id and for attributes
- Hide radio button: This method has many uses for you Just use your imagination. The methods I have seen include setting display:none; to hide, setting
- Hide redundant tab pages: In the same way as above, you can also set hierarchical relationships through z-index to block each other.
- Set the default item: Add the checked="checked" attribute to the default button
- Set the selection effect: Use the + selector and ~ to select Use the tool to set the style of the tab page below when the corresponding element is selected to achieve the selection effect
/* 当radio为选中状态时设置它的test-label兄弟元素的属性 */
input[type="radio"]:checked+.test-label {
/* 为了修饰存在的边框背景属性 */
border-color: #cbcccc;
border-bottom-color: #fff;
background: #fff;
/* 为了修饰存在的层级使下边框遮挡下方p的上边框 */
z-index: 10;
}
/* 当radio为选中状态时设置与它同级的tab-box元素的显示层级 */
input[type="radio"]:checked~.tab-box {
/* 选中时提升层级，遮挡其他tab页达到选中切换的效果 */
z-index: 5;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>CSS实现Tab切换效果</title>
<style>
ul {
margin: 0;
padding: 0;
}
.clearfloat {
zoom: 1;
}
.clearfloat::after {
display: block;
clear: both;
content: "";
visibility: hidden;
height: 0;
}
.tab-list {
position: relative;
}
.tab-list .tab-itom {
float: left;
list-style: none;
margin-right: 4px;
}
.tab-itom .test-label {
position: relative;
display: block;
width: 85px;
height: 27px;
border: 1px solid transparent;
border-top-left-radius: 5px;
border-top-right-radius: 5px;
line-height: 27px;
text-align: center;
background: #e7e8eb;
}
.tab-itom .tab-box {
/* 设置绝对定位方便定位相对于tab-list栏的位置，同时为了可以使用z-index属性 */
position: absolute;
left: 0;
top: 28px;
width: 488px;
height: 248px;
border: 1px solid #cbcccc;
border-radius: 5px;
border-top-left-radius: 0px;
background: #fff;
/* 设置层级最低方便选中状态遮挡 */
z-index: 0;
}
/* 用绝对定位使按钮脱离文档流，透明度设置为0将其隐藏 */
input[type="radio"] {
position: absolute;
opacity: 0;
}
/* 利用选择器实现 tab切换 */
/* 当radio为选中状态时设置它的test-label兄弟元素的属性 */
input[type="radio"]:checked + .test-label {
/* 为了修饰存在的边框背景属性 */
border-color: #cbcccc;
border-bottom-color: #fff;
background: #fff;
/* 为了修饰存在的层级使下边框遮挡下方p的上边框 */
z-index: 10;
}
/* 当radio为选中状态时设置与它同级的tab-box元素的显示层级 */
input[type="radio"]:checked ~ .tab-box {
/* 选中时提升层级，遮挡其他tab页达到选中切换的效果 */
z-index: 5;
}
</style>
</head>
<body class="clearfloat">
<ul class="tab-list clearfloat">
<li class="tab-itom">
<input type="radio" id="testTabRadio1" class="test-radio" name="tab" checked="checked">
<label class="test-label" for="testTabRadio1">选项卡一</label>
<p class="tab-box">
111111111111
</p>
</li>
<li class="tab-itom">
<input type="radio" id="testTabRadio2" class="test-radio" name="tab">
<label class="test-label" for="testTabRadio2">选项卡二</label>
<p class="tab-box">
2222222222222
</p>
</li>
<li class="tab-itom">
<input type="radio" id="testTabRadio3" class="test-radio" name="tab">
<label class="test-label" for="testTabRadio3">选项卡三</label>
<p class="tab-box">
33333333333333
</p>
</li>
</ul>
</body>
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