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  • jQuery系列(十三):实现轮播

    1、轮播一:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title></title>
        <style type="text/css">
            *{
                padding: 0;
                margin: 0;
            }
            ul{
                list-style: none;
            }
            .slider-list{
    
                width: 580px;
                overflow: hidden;
                margin: 100px auto;
                position: relative;
            }
            .slider-list .slider-wrapper{
                height: 470px;
            }
            .slider-wrapper ul{
                height: 100%;
    
                position: relative;
    
            }
            .slider-wrapper ul li{
                float: left;
                width: 590px;
                height: 470px;
    
            }
            .slider-wrapper ul li a{
                display: block;
                width: 100%;
                height: 100%;
            }
            .focus-img{
                width: 590px;
                height: 470px;
            }
            button{
                position: absolute;
                width: 24px;
                height: 40px;
                top: 50%;
                line-height: 40px;
                text-align: center;
                background-color: rgba(0,0,0,.2);
                color: white;
                font-size: 30px;
                border: 0;
                outline: none;
                cursor: pointer;
                z-index: 99;
            }
            button.next{
                right: 0;
            }
            button.prev{
                left: 0;
            }
            .slider-index{
                position: absolute;
                bottom: 10px;
                left:250px;
                z-index: 2;
    
            }
            .slider-index span{
                display: inline-block;
                width: 10px;
                height: 10px;
                border: 2px solid red;
                border-radius: 50%;
            }
            .slider-index span.active{
                background-color: orange;
            }
    
        </style>
    </head>
    <body>
    <div class="slider-list">
        <div class="slider-wrapper">
            <ul>
    
            </ul>
        </div>
        <button class="next">></button>
        <button class="prev"><</button>
        <div class="slider-index">
            <span class="active"></span>
            <span></span>
            <span></span>
            <span></span>
            <span></span>
        </div>
    </div>
    <script type="text/javascript" src="../jquery-3.3.1.min.js"></script>
    <script type="text/javascript">
    
        $(function(){
            // 1.获取本地图片数据 590*470
            let imgArr = ['./5.jpg','./1.jpg','./2.jpg','./3.jpg','./4.jpg','./5.jpg','./1.jpg'];
    
            // 获取图片的宽度
            let imgWidth = 590;
            let len = $('span').length;
    
            // 2.遍历数据 将图片添加到ul中
            for(let i = 0;i < imgArr.length;i++){
                let width = i*imgWidth;
                $(`<li>
                        <a href="javascript:;">
                            <img src=${imgArr[i]} alt=${i}>
                        </a>
                    </li>`).appendTo('.slider-wrapper ul').addClass('slider-item')
    
            }
            // 设置图片的类名
            $('img').addClass('focus-img');
            // 设置父盒子的总宽度
            $('.slider-wrapper').width((imgArr.length+1)*imgWidth);
            $('.slider-wrapper ul').width((imgArr.length+1)*imgWidth);
            // 初始化
            // 默认显示第一张图片
            init();
            function init(){
                $("ul").css("left",-imgWidth);
            }
            // 下一张
            $('button.next').click(function(event) {
                next();
            });
    
            // 控制图片显示第几张
            let count  = 1;
            function next(){
    
                if (count ===len+1) {
                    count  = 2;
                    $("ul").css("left",-imgWidth);
                }else{
                    count++;
                }
                $('.slider-wrapper ul').stop().animate({left:-count*imgWidth},200);
                // 控制轮播图索引改变颜色
                if (count>len) {
                    $("span").eq(0).addClass("active").siblings("span").removeClass("active");
                }else{
    
                    $("span").eq(count-1).addClass("active").siblings("span").removeClass("active");
                }
    
            }
            // 给小圆圈添加点击事件
            $('span').click(function(){
                //自己的样式
                $(this).addClass("active").siblings("span").removeClass("active");
                count = $(this).index()+1;
                $("ul").animate({"left":-count*imgWidth},200);
            });
            setInterval(next,2000);
        })
    </script>
    </body>
    </html>

    2、轮播二

    <!DOCTYPE html>
    <html>
    <head lang="en">
        <meta charset="UTF-8">
        <title></title>
        <style type="text/css">
            *{margin: 0;padding: 0;}
            ul,ol{ list-style: none;}
            .wrapper{
                width: 580px;
                height: 240px;
                margin: 100px auto;
                /*overflow: hidden;*/
                position: relative;
            }
            .wrapper ul{
                width: 100%;
                height: 240px;
                overflow: hidden;
    
            }
            .wrapper ul li{
                float: left;
                width: 580px;
                height: 240px;
            }
            ol{
                position: absolute;
                right: 0;
                bottom: 10px;
                width: 190px;
            }
            ol li{
                float: left;
                width: 20px;
                height: 20px;
                margin: 0 5px;
                text-align: center;
                border-radius: 50%;
                cursor: pointer;
                background-color: #abc;
            }
            ol li.current{
                background-color: pink;
            }
        </style>
        <script type="text/javascript" src="../jquery-3.3.1.min.js"></script>
        <script type="text/javascript">
            $(function () {
                // 根据ol下li的索引号,匹配ul下相对应li的索引号
                $(".wrapper ol li").mouseenter(function () {
                    $(this).addClass("current").siblings().removeClass("current");
                    $(".wrapper ul li").eq($(this).index()).stop().fadeIn("fast").siblings().stop().fadeOut();
                });
            });
        </script>
    </head>
    <body>
    <div class="wrapper">
        <ul>
            <li><img src="./1.png" alt=""/></li>
            <li><img src="./2.png" alt=""/></li>
            <li><img src="./3.png" alt=""/></li>
            <li><img src="./4.png" alt=""/></li>
            <li><img src="./5.png" alt=""/></li>
        </ul>
        <ol>
            <li class="current">1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
        </ol>
    </div>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/felixwang2/p/9878474.html
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