老师我的效果实现不了，也没想通这个轮播图，希望老师讲解一下

来源：2-3 代码编写（1）

慕仰5214815

2020-11-15 16:43:20

# 具体遇到的问题
首页动态项目慕家居的精品推荐部分轮播图
# 报错信息的截图

# 相关课程内容截图

# 尝试过的解决思路和结果

# 粘贴全部相关代码，切记添加代码注释（请勿截图）

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            font-family: '微软雅黑';
        }

        ul,
        ol {
            list-style: none;
        }

        a {
            text-decoration: none;
        }

        .center-wrap {
            width: 1201px;
            margin: 0 auto;
        }

        .recommend {
            background-color: #EFF0F4;
            height: 590px;
            position: relative;
            /* aboutCenter高度使用44px，剩余38 */
            margin-top: 38px;
            padding-top: 70px;
        }

        .recommend .center-wrap {
            position: relative;
        }

        .recommend .center-wrap .similar {
            width: 232px;
            position: absolute;
            left: 50%;
            margin-left: -116px;
            padding-top: 32px;
            text-align: center;
        }

        .recommend .center-wrap .similar h3 {
            font-size: 32px;
            color: #696868;
            font-weight: normal;
        }

        .recommend .center-wrap .similar span {
            font-size: 18px;
            color: #9B9B9B;
            position: relative;
        }

        /* 列表 */
        .recommend .center-wrap .carousel {
            width: 1150px;
            overflow: hidden;
        }

        .recommend .center-wrap .list {
            overflow: hidden;
            margin-left: 61px;
            padding-top: 195px;
            width: 10000px;
            left: 0;
            transition: left .5s ease 0s;
        }

        .recommend .center-wrap .list li {
            float: left;
            position: relative;
            margin-right: 23px;
        }

        .recommend .center-wrap .list li a img {
            width: 345px;
            height: 326px;
        }

        .recommend .center-wrap .list li:last-child {
            margin-left: 0;
        }

        .recommend .center-wrap .list li a .recomWords {
            width: 345px;
            height: 45px;
            position: absolute;
            left: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.50);
            font-size: 16px;
            color: #FFFFFF;
            line-height: 45px;
            text-align: center;
        }

        /*  左右箭头图标*/
        .recommend .arrow {
            width: 48px;
            height: 48px;
        }

        .recommend .prev {
            position: absolute;
            left: 0;
            top: 346px;
            background-image: url(images/prev.png);
        }

        .recommend .next {
            position: absolute;
            right: 0;
            top: 346px;
            background-image: url(images/next.png);
        }

        .recommend .prev:hover {
            background-image: url(images/prev_active.png);
        }

        .recommend .next:hover {
            background-image: url(images/next_active.png);
        }
    </style>
</head>

<body>
    <section class="recommend">
        <div class="center-wrap">
            <div class="similar">
                <h3>精品推荐</h3>
                <span>Boutique recommendation</span>
            </div>
            <a href="javascript:;" class='arrow prev' id='leftbtn'></a>
            <a href="javascript:;" class='arrow next' id='rightbtn'></a>
            <div class="carousel">
                <ul class='list' id='list'>
                    <li>
                        <a href="#">
                            <img src="images/recommend1.png" alt="">
                            <div class="recomWords">轻奢风格样板房客厅色彩搭配装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend2.png" alt="">
                            <div class="recomWords">简约美式风格卧室衣柜设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend3.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend4.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend5.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend6.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend7.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend8.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                    <li>
                        <a href="#">
                            <img src="images/recommend9.png" alt="">
                            <div class="recomWords">轻奢风格L型厨房装修设计</div>
                        </a>
                    </li>
                </ul>
            </div>
        </div>
    </section>
    <script>
        // 先得到元素
        var list = document.getElementById('list');
        var leftbtn = document.getElementById('leftbtn');
        var rightbtn = document.getElementById('rightbtn');
        // // 克隆
        var clone_li = list.firstElementChild.cloneNode(true);
        list.appendChild('clone_li');
        var idx = 0;
        var lock = true;
        rightbtn.onclick = function () {
            if (!lock) return;
            lock = false;
            list.style.transition = 'left .5s ease 0s';
            idx++;
            if (idx > 8) {
                setTimeout(function () {
                    list.style.transition = 'none';
                    list.style.left = 0;
                    idx = 0;
                }, 500)
            }
            list.style.left = -idx * 345 + 'px';
            // 函数节流
            setTimeout(function () {
                lock = true;
            }, 500);

        }

        leftbtn.onclick = function () {
            if (!lock) return;
            lock = false;
            if (idx == 0) {
                list.style.transition = 'none';
                list.style.left = -9 * 345 + 'px';
                setTimeout(function () {
                    list.style.transition = 'left .5s ease 0s';
                    idx = 8;
                    list.style.left = -idx * 345 + 'px';
                }, 0)
            } else {
                idx--;
                list.style.left = idx * 345 + 'px';
            }
            // 函数节流
            setTimeout(function () {
                lock = true;
            }, 500);
        }
    </script>
</body>

</html>