lovecoding
/
W250913


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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="https://at.alicdn.com/t/c/font_5060986_y3nqnoflco.css">
    <style>
        /* css reset */
        * {
            margin: 0;
            padding: 0;
        }

        li {
            list-style: none;
        }

        .container {
            width: 1226px;
            height: 460px;
            margin: 100px auto;
            position: relative;
        }


        .img-list {
            position: absolute;
            top: 0;
            left: 0;
        }

        .img-list img {
            width: 100%;
        }

        .img-list .img-list-item {
            display: none;
        }

        .img-list .active {
            display: block;
        }

        .control-content {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            /* background-color: rgba(0,0,0,0.5); */
        }

        .control-content .left-nav {
            width: 234px;
            height: 100%;
            float: left;
            background-color: rgba(105, 101, 101, .6);
        }

        .control-content .left-nav ul {
            padding: 20px 0;
        }

        .control-content .left-nav ul li {
            padding-left: 30px;
            color: #fff;
            height: 42px;
            line-height: 42px;
            font-size: 14px;
        }

        .control-content .left-nav ul li:hover {
            background-color: #ff6700;
            cursor: pointer;
        }

        .control-content .left-nav ul li .iconfont {
            float: right;
            margin-right: 30px;
        }

        .control-content .right-btn {
            width: 992px;
            float: left;
            height: 100%;
            /* background-color: red; */
            position: relative;
        }

        .control-content .arr-btn {
            height: 69px;
            width: 100%;
            /* background-color: blue; */
            position: absolute;
            top: 50%;
            margin-top: -35px;
        }

        .control-content .arr-btn .arr-left,
        .control-content .arr-btn .arr-right {
            width: 41px;
            height: 100%;
            background-image: url("./img/icon-slides.png");

        }

        .control-content .arr-btn .arr-left {
            float: left;
            background-position: -84px 0;
        }

        .control-content .arr-btn .arr-left:hover {
            background-position: 0 0;
            cursor: pointer;
        }

        .control-content .arr-btn .arr-right {
            float: right;
            background-position: -125px 0;
        }

        .control-content .arr-btn .arr-right:hover {
            background-position: -42px 0;
            cursor: pointer;
        }

        .control-content .dot-btn .dot-btn-item {
            width: 6px;
            height: 6px;
            border: 2px solid #fff;
            border-radius: 50%;
            background-color: rgba(0, 0, 0, .4);
            border-color: hsla(0, 0%, 100%, .3);
            float: left;
            margin: 0 3px;
        }

        .control-content .dot-btn .dot-btn-item:hover {
            background-color: hsla(0, 0%, 100%, .3);
            border-color: rgba(0, 0, 0, .4);
            cursor: pointer;
        }

        .control-content .dot-btn .active {
            background-color: hsla(0, 0%, 100%, .3);
            border-color: rgba(0, 0, 0, .4);
        }

        .control-content .dot-btn {
            position: absolute;
            right: 50px;
            bottom: 30px;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="img-list">
            <ul>
                <li class="img-list-item active">
                    <img src="./img/slider1.jpg" alt="slider1">
                </li>
                <li class="img-list-item ">
                    <img src="./img/slider2.jpg" alt="slider2">
                </li>
                <li class="img-list-item">
                    <img src="./img/slider3.jpg" alt="slider3">
                </li>
                <li class="img-list-item">
                    <img src="./img/slider4.jpg" alt="slider4">
                </li>
                <li class="img-list-item">
                    <img src="./img/slider5.jpg" alt="slider5">
                </li>
                <li class="img-list-item">
                    <img src="./img/slider6.jpg" alt="slider6">
                </li>
            </ul>
        </div>
        <div class="control-content">
            <div class="left-nav">
                <ul>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">电脑</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">平板</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">笔记本</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                    <li>
                        <span class="nav-text">手机</span>
                        <i class="iconfont icon-arrow"></i>
                    </li>
                </ul>
            </div>
            <div class="right-btn">
                <div class="arr-btn">
                    <div class="arr-left"></div>
                    <div class="arr-right"></div>
                </div>
                <div class="dot-btn">
                    <ul>
                        <li class="dot-btn-item active"></li>
                        <li class="dot-btn-item"></li>
                        <li class="dot-btn-item"></li>
                        <li class="dot-btn-item"></li>
                        <li class="dot-btn-item"></li>
                        <li class="dot-btn-item"></li>
                    </ul>
                </div>
            </div>
        </div>
    </div>

    <script>
        // 获取圆点按钮元素
        var aDotBtns = document.getElementsByClassName("dot-btn-item");
        // 获取图片列表元素
        var aImgItems = document.getElementsByClassName("img-list-item");
        // 获取向右按钮
        var oArrRight = document.getElementsByClassName("arr-right")[0];
        // 获取向左按钮
        var oArrLeft = document.getElementsByClassName("arr-left")[0];
        // 获取整个轮播图区域
        var oContainer = document.getElementsByClassName("container")[0];
        // 定义全局变量 当前是第几张图片 的索引
        var curIndex = 0;
        // 定义定时器变量
        var timer = null;

        // 定义切换图片函数
        function switchImg(index) {
            // 清除所有圆点按钮的选中状态
            for (var j = 0; j < aDotBtns.length; j++) {
                aDotBtns[j].classList.remove("active");
                aImgItems[j].classList.remove("active");
            }
            // 给当前按钮添加选中状态
            aDotBtns[index].classList.add("active");
            // 给相对应图片添加选中状态
            aImgItems[index].classList.add("active");
        }

        // 遍历所有圆点按钮绑定点击事件
        for (var i = 0; i < aDotBtns.length; i++) {
            aDotBtns[i].index = i; // 自定义属性 记录当前按钮的索引值
            aDotBtns[i].onclick = function () {
                // // 清除所有圆点按钮的选中状态
                // for (var j = 0; j < aDotBtns.length; j++) {
                //     aDotBtns[j].classList.remove("active");
                //     aImgItems[j].classList.remove("active");
                // }
                // // 给当前按钮添加选中状态
                // this.classList.add("active");
                // // 给相对应图片添加选中状态
                // aImgItems[this.index].classList.add("active");

                // 调用切换图片函数
                switchImg(this.index);
                // 更新当前索引值
                curIndex = this.index;
            }
        }
        // 向右按钮点击事件
        oArrRight.onclick = function () {
            // 当前索引+1
            curIndex++;
            // 如果当前索引大于等于图片总数 则重置为0
            if (curIndex >= aImgItems.length) {
                curIndex = 0;
            }
            // 调用切换图片函数
            switchImg(curIndex);
        }
        // 向左按钮点击事件
        oArrLeft.onclick = function () {
            // 当前索引-1
            curIndex--;
            // 如果当前索引小于0 则重置为最后一张图片的索引
            if (curIndex < 0) {
                curIndex = aImgItems.length - 1;
            }
            // 调用切换图片函数
            switchImg(curIndex);
        }
        // 实现定时轮播
        function play() {
            timer = setInterval(function () {
                oArrRight.onclick();
            }, 2000);
        }
        play();

        // 鼠标移入停止轮播 停止轮播
        oContainer.onmouseover = function () {
            clearInterval(timer);
        }
        // 鼠标移出开始轮播
        oContainer.onmouseout = function () {
            play();
        }
    </script>
</body>

</html>