新增第133个小实例：带标题描述的圆角图片手风琴效果
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DESKTOP-BM6RJU5\wyanh
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129. HTML5+CSS3小实例：纯CSS实现简约的天气图标动画特效（下）
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130. HTML5+CSS3小实例：传送带式的loading加载动画
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131. HTML5+CSS3小实例：纯CSS实现打字动画特效
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132. HTML5+CSS3+JS小实例：上下滚动的数字时钟
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132. HTML5+CSS3+JS小实例：上下滚动的数字时钟
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133. HTML5+CSS3+JS小实例：带标题描述的圆角图片手风琴效果
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*{
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margin: 0;
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padding: 0;
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}
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body{
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/* 100%窗口高度 */
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height: 100vh;
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/* 弹性布局 水平+垂直居中 */
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display: flex;
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justify-content: center;
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align-items: center;
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/* 径向渐变背景 */
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background: radial-gradient(circle at top center,#718497,#29323c);
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}
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.container{
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/* 弹性布局 默认水平排列 */
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display: flex;
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width: 90vw;
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max-width: 900px;
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height: 400px;
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/* 溢出隐藏 */
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overflow: hidden;
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}
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.item{
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/* 相对定位 */
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position: relative;
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width: 60px;
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margin: 10px;
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cursor: pointer;
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border-radius: 30px;
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/* 保持原有尺寸比例，裁切长边 */
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background-size: cover;
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/* 定位背景图像为正中间 */
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background-position: center;
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/* 过渡效果：时长 贝塞尔曲线 */
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transition: 0.5s cubic-bezier(0.05,0.61,0.41,0.95);
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overflow: hidden;
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}
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.item .shadow{
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position: absolute;
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bottom: 0;
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left: 0;
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right: 0;
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height: 100px;
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transition: 0.5s cubic-bezier(0.05,0.61,0.41,0.95);
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}
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.item .content{
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display: flex;
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position: absolute;
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left: 10px;
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right: 0;
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bottom: 10px;
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height: 40px;
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transition: 0.5s cubic-bezier(0.05,0.61,0.41,0.95);
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}
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.item .content .icon{
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min-width: 40px;
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width: 40px;
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height: 40px;
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border-radius: 50%;
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background-color: #fff;
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display: flex;
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justify-content: center;
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align-items: center;
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font-size: 16px;
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}
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.item:nth-child(1) .fa{
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color: #fc6e51;
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}
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.item:nth-child(2) .fa{
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color: #ffce54;
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}
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.item:nth-child(3) .fa{
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color: #2ecc71;
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}
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.item:nth-child(4) .fa{
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color: #5d9cec;
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}
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.item:nth-child(5) .fa{
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color: #ac92ec;
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}
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.item .content .text{
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display: flex;
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flex-direction: column;
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justify-content: center;
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margin-left: 10px;
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color: #fff;
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width: 100%;
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}
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.item .content .text div{
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/* 超出显示省略号（需要设置width） */
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width: calc(100% - 70px);
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text-overflow: ellipsis;
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overflow: hidden;
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white-space: nowrap;
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opacity: 0;
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transition: opacity 0.5s ease-out;
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}
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.item .content .text .tit{
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font-weight: bold;
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font-size: 18px;
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}
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.item .content .text .sub{
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/* 设置过渡效果延迟时间 */
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transition-delay: 0.1s;
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}
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/* 选中态样式 */
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.item.active{
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flex: 1;
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margin: 0;
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border-radius: 40px;
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}
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.item.active .shadow{
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background: linear-gradient(to top,rgba(0,0,0,0.35) 65%,transparent);
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}
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.item.active .content{
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bottom: 20px;
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left: 20px;
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}
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.item.active .content .text div{
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opacity: 1;
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}
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
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<title>带标题描述的圆角图片手风琴效果</title>
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<!-- 引入字体图标 -->
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<link rel="stylesheet" href="/fonts/css/font-awesome.css">
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<link rel="stylesheet" href="133.css">
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</head>
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<body>
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<div class="container">
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<div class="item active" style="background-image: url(/images/133/sun.jpg);">
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<div class="shadow"></div>
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<div class="content">
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<div class="icon">
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<i class="fa fa-sun-o"></i>
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</div>
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<div class="text">
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<div class="tit">这是标题</div>
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<div class="sub">这是一段描述</div>
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</div>
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</div>
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</div>
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<div class="item" style="background-image: url(/images/133/cloud.jpg);">
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<div class="shadow"></div>
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<div class="content">
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<div class="icon">
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<i class="fa fa-cloud"></i>
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</div>
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<div class="text">
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<div class="tit">这是标题</div>
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<div class="sub">这是一段描述</div>
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</div>
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</div>
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</div>
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<div class="item" style="background-image: url(/images/133/rain.jpg);">
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<div class="shadow"></div>
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<div class="content">
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<div class="icon">
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<i class="fa fa-tint"></i>
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</div>
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<div class="text">
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<div class="tit">这是标题</div>
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<div class="sub">这是一段描述</div>
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</div>
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</div>
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</div>
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<div class="item" style="background-image: url(/images/133/bolt.jpg);">
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<div class="shadow"></div>
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<div class="content">
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<div class="icon">
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<i class="fa fa-bolt"></i>
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</div>
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<div class="text">
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<div class="tit">这是标题</div>
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<div class="sub">这是一段描述</div>
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</div>
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</div>
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</div>
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<div class="item" style="background-image: url(/images/133/snow.jpg);">
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<div class="shadow"></div>
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<div class="content">
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<div class="icon">
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<i class="fa fa-snowflake-o"></i>
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</div>
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<div class="text">
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<div class="tit">这是标题</div>
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<div class="sub">这是一段描述</div>
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</div>
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</div>
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</div>
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</div>
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<script src="133.js"></script>
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</body>
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</html>
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// 获取所有.item元素
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let items=document.querySelectorAll('.item');
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// 设置选中态样式
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function setActive(){
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// 遍历所有.item元素，移出active样式
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items.forEach((item)=>{
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item.classList.remove('active');
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})
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// 为当前选中项添加active样式
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this.classList.add('active');
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}
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// 遍历所有.item元素，分别为其设置点击事件
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items.forEach((item)=>{
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item.addEventListener('click',setActive);
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})
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