• tab栏切换效果


    <!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>Document</title>
        <style>
            * {
                margin: 0;
                padding: 0;
            }
            
            li {
                list-style-type: none;
            }
            
            .tab {
                 978px;
                margin: 100px auto;
            }
            
            .tab_list {
                height: 39px;
                border: 1px solid #ccc;
                background-color: #f1f1f1;
            }
            
            .tab_list li {
                float: left;
                height: 39px;
                line-height: 39px;
                padding: 0 20px;
                text-align: center;
                cursor: pointer;
            }
            
            .tab_list .current {
                background-color: #c81623;
                color: #fff;
            }
            
            .item_info {
                padding: 20px 0 0 20px;
            }
            
            .item {
                display: none;
            }
        </style>
    </head>

    <body>
        <div class="tab">
            <div class="tab_list">
                <ul>
                    <li class="current">商品介绍</li>
                    <li>规格与包装</li>
                    <li>售后保障</li>
                    <li>商品评价(50000)</li>
                    <li>手机社区</li>
                </ul>
            </div>
            <div class="tab_con">
                <div class="item" style="display: block;">
                    商品介绍模块内容
                </div>
                <div class="item">
                    规格与包装模块内容
                </div>
                <div class="item">
                    售后保障模块内容
                </div>
                <div class="item">
                    商品评价(50000)模块内容
                </div>
                <div class="item">
                    手机社区模块内容
                </div>

            </div>
        </div>
        <script>
            // 1 获取元素
            var tab_list = document.querySelector('.tab_list');
            var lis = tab_list.querySelectorAll('li');
            var items = document.querySelectorAll('.item');
            // 2 for循环 获取点击事件
            for (var i = 0; i < lis.length; i++) {

                // 设置li 索引号
                lis[i].setAttribute('index', i);
                lis[i].onclick = function() {
                    // 取消所有li 属性
                    for (var i = 0; i < lis.length; i++) {
                        lis[i].className = '';
                    }
                    // 留下自己的属性
                    this.className = 'current';

                    // 2 下面的显示内容模块
                    var index = this.getAttribute('index');
                    console.log(index);
                    // 取消所有 item属性隐藏
                    for (var i = 0; i < items.length; i++) {
                        items[i].style.display = 'none';
                    }
                    // 当前的显示出来
                    items[index].style.display = 'block';
                }
            }
        </script>
    </body>

    </html>
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  • 原文地址:https://www.cnblogs.com/ericblog1992/p/13052233.html
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