JQ实现简单的自动轮播图效果-蒲公英云

JQ实现简单的自动轮播图效果

傷城~ 2023-03-02 07:38 289阅读 0赞

在这里插入图片描述

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta name="author" content="Jxz">
    <title></title>
    <script src="../jquery-3.1.1.js"></script>
    <style>
        ul,li{ 
            margin: 0;
            padding: 0;
            list-style: none;
        }
        #box{ 
            width: 520px;
            height: 280px;
            margin: 100px auto;
            position: relative;
        }
        #box .list li{ 
            position: absolute;
            top: 0;
            left: 0;
            display: none;
        }
        #box .list li.current{ 
            display: block;
        }
        #box .count{ 
            position: absolute;
            left: 10px;
            bottom: 10px;
        }
        #box .count li{ 
            float: left;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: #fa0;
            text-align: center;
            line-height: 20px;
            margin-left: 10px;
            color: #fff;
            opacity: 0.8;
            cursor: pointer;
        }
        #box .count li.current{ 
            background-color: #f60;
            opacity: 1;
        }
        #box .btn{ 
            position: absolute;
            bottom:10px;
            right: 15px;
        }
        #box .btn li{ 
            width: 50px;
            height: 50px;
            background-color: #ccc;
            float: right;
            margin-left: 15px;  
            opacity: 0.8;
            cursor: pointer;
            text-align: center;
            line-height: 50px;
        }
    </style>
</head>
<body>
    <div id="box">
        <ul class="list"> 
            <li class="current"><img src="img/01.jpg" alt=""></li>
            <li><img src="img/02.jpg" alt=""></li>
            <li><img src="img/03.jpg" alt=""></li>
            <li><img src="img/04.jpg" alt=""></li>
            <li><img src="img/05.jpg" alt=""></li>
        </ul>
        <ul class="count">
            <li class="current">1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
        </ul>
        <ul class="btn">
            <li class="right">></li>
            <li class="left"><</li>
        </ul>
    </div>
</body>
</html>
<script>
    // var aLi=$('.list li');
    // var aNum=$('.count li');
    // 记录当前显示的图片的索引
    var current=0;
    // 保存定时器
    var timer=null;
    timer=setInterval(autoPlay,1000)
    // 自动播放
    function autoPlay(){ 
        current<$('.count li').length-1?current++:current=0;
        show()
    }
    function show(){ 
        // aLi.hide()
        $('.list li').hide()
        .eq(current).show();
        // aNum.removeClass()
        // .eq(current).addClass('current')
        $('.count li').eq(current).toggleClass('current').siblings().removeClass('current');     
    }
    // 手动
    $('.count li').mouseenter(function(){ 
        current=$(this).index()
        show()
    })
    // 按钮控制选图
    $('#box .left').click(function(){ 
        current>0?current--:current=4;
        show()
    })
    $('#box .right').click(function(){ 
        current<$('.count li').length-1?current++:current=0;
        show()
    })
    // 鼠标进图自动暂停
    $('#box').hover(function(){ 
        clearInterval(timer);
    },function(){ 
        timer = setInterval(autoPlay,1000);
    })
</script>