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JQUERY实现轮播

2024-08-19 09:15:13   217人阅读

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>轮播</title>
    <style type="text/css">
        * {
            margin: 0;
            padding: 0;
        }
        #container {
            position: relative;
            left: 0;
            top: 0;
            width: 430px;
            height: 430px;
            overflow: hidden;
        }
        #wrap {
            position: absolute;
            left: 0;
            top: 0;
            width: 1720px;
            height: 430px;
            overflow: hidden;
        }
        #wrap img {
            float: left;
        }
        #nav {
            width: 150px;
            height: 30px;
            list-style: none;
            position: absolute;
            bottom: 40px;
            left: 0;
            right: 0;
            margin: auto;
        }
        #nav>li {
            width: 30px;
            height: 30px;
            border-radius: 30px;
            background-color: rgba(255, 255, 255, 0.6);
            float: left;
            margin-left: 10px;
            cursor: pointer;
        }
        #nav>li:first-child {
            margin-left: 0;
        }
        #nav .selected{
            background-color: #60b000;
        }
    </style>
</head>
<body>
    <div id="container">
        <div id="wrap">
            <img src=http://www.mamicode.com/"../images/imgA_2.jpg">
            <img src=http://www.mamicode.com/"../images/imgB_2.jpg">
            <img src=http://www.mamicode.com/"../images/imgC_2.jpg">
            <img src=http://www.mamicode.com/"../images/imgD_2.jpg">
        </div>
        <ul id="nav">
            <li class="selected"></li>
            <li></li>
            <li></li>
            <li></li>
        </ul>
    </div>    <script src="http://www.mamicode.com/js/jquery-1.12.4.js"></script>   
 <script >
$(function(){
    $(‘#wrap‘).data(‘index‘,0);
   $(‘#nav‘).on(‘click‘,‘li‘,function(){
       //清除自动播放的定时器
        clearInterval(timer);

        var index=$(this).index();
        var that=this;
       //把当前要显示的索引号，保存到附加数据中
       $(‘#wrap‘).data(‘index‘,index).animate({
          left:index*(-430)
       },1000,function(){
           $(‘#nav li‘).removeClass(‘selected‘);
           $(that).addClass(‘selected‘);
           //重启自动播放的定时器
           timer=setInterval(autoPlay,2000);
       });

   });

    var timer=setInterval(autoPlay,2000);
    //自动播放功能
    function autoPlay(){
        //获取当前的索引号
        var currentIndex=$(‘#wrap‘).data(‘index‘);
        //下一个索引号
        var nextIndex;
        if(currentIndex===$(‘#wrap img‘).length-1){
            nextIndex=0;
        }else{
            nextIndex=currentIndex+1;
        }
        $(‘#wrap‘).data(‘index‘,nextIndex).animate({
            left:nextIndex*(-430)
        },1000,function(){
            $(‘#nav li‘).removeClass(‘selected‘).eq(nextIndex).addClass(‘selected‘);
        });
    }

});
</script>
</body></html>

JQUERY实现轮播


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