How is the JD carousel image implemented? Jingdong carousel image code-HTML Tutorial-php.cn

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How is the JD carousel image implemented? Jingdong carousel image code

云罗郡主

Oct 18, 2018 pm 02:29 PM

Implement code

The content of this article is about how JD carousel pictures are implemented? Jingdong carousel image code has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        body,ul,li{padding:0;margin:0;}
        li{list-style-type:none;}
        .wrap{
            position:relative;
            width:480px;
            height:260px;
            margin:100px auto;
        }
        .wrap>ul>li{position:absolute;display:none;}
        /*隐藏所有的li*/
        .wrap img{width:480px;height:260px;}
        .wrap li:first-child{display:block;}/*显示第一个*/
        .arrow{
            width:480px;
            height:60px;
            position:absolute;
            top:50%;
            margin-top:-30px;
            display:none;
        }
        .arrow>span{
           font-size:24pt;
            line-height:60px;
            display:inline-block;
            width:36px;
            background-color:#CEE5E8;
            text-align:center;
            cursor:pointer;
            opacity:0.5;
            border-radius:5px;/*显示圆框*/
            -webkit-border-radius:5px;
            -moz-border-radius:5px;
            color:black;
        }
        .wrap:hover .arrow{
            display:block;
        }
        .arrow>span:last-child{
            float:right;
        }
    </style>
</head>
<body>
<div>
    <!--图片部分-->
    <ul>
        <li>
            <a href="javascript:void(0)">
                <img  src="/static/imghwm/default1.png"  data-src="images/1.jpg"  class="lazy"  / alt="How is the JD carousel image implemented? Jingdong carousel image code" >
            </a>
        </li>
        <li>
            <a href="javascript:void(0)">
                <img  src="/static/imghwm/default1.png"  data-src="images/2.jpg"  class="lazy"  / alt="How is the JD carousel image implemented? Jingdong carousel image code" >
            </a>
        </li>
        <li>
            <a href="javascript:void(0)">
                <img  src="/static/imghwm/default1.png"  data-src="images/3.jpg"  class="lazy"  / alt="How is the JD carousel image implemented? Jingdong carousel image code" >
            </a>
        </li>
        <li>
            <a href="javascript:void(0)">
                <img  src="/static/imghwm/default1.png"  data-src="images/4.jpg"  class="lazy"  / alt="How is the JD carousel image implemented? Jingdong carousel image code" >
            </a>
        </li>
    </ul>
    <!--按钮部分-->
    <div>
        <span><</span>
        <span>></span>
    </div>
</div>
</body>
<script src="jquery-1.12.0.min.js"></script>
<script>
    $(function(){
        var count = 0;
        function change() {
            count++;
            if( count == $(".wrap>ul>li").length){
                count = 0;
            }
            $(".wrap>ul>li").eq(count).fadeIn().siblings("li").fadeOut();
        }
       var myTimer = setInterval(change,4000);
        function reRun(){
           myTimer = setInterval(change,4000);
        }
        /*注意jquery中setInterval函数不要加引号和(),否则会报缺少对象*/
        $(".arrow>span").eq(0).click(function(){
            clearInterval(myTimer);
            /*清除计时器，目的在于不会因点击按钮时setInterval事件仍旧执行*/
            count--;
            if( count == -1){
                count = $(".wrap>ul>li").length - 1;
            }            $(".wrap>ul>li").eq(count).fadeIn().siblings("li").fadeOut();
            setTimeout(reRun,0);
            /*重新启动计时器，保证不点击按钮是能正常切换*/
        });
        $(".arrow>span").eq(1).click(function(){
            clearInterval(myTimer);
            count++;
            if( count == $(".wrap>ul>li").length){
                count = 0;
            }       $(".wrap>ul>li").eq(count).fadeIn().siblings("li").fadeOut();
            setTimeout(reRun,0);
        });
    });
</script>
</html>

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