带左右箭头的焦点图

最新推荐文章于 2021-06-07 13:09:40 发布

原创最新推荐文章于 2021-06-07 13:09:40 发布 · 490 阅读

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        ul,ol{
            list-style: none;
        }
        img{
            vertical-align: top;
        }
        #box{
            width: 300px;
            height: 200px;
            border: 1px solid #ccc;
            padding: 5px;
            margin: 100px auto;

        }
        .inner{
            width: 100%;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .inner ul{
            width: 1000%;
            position: absolute;
            left: 0;
        }
        .inner ul li{
            float: left;
        }
        #arr{
            display: none;
            position: relative;
            top: -50%;
        }
        #arr span{
            width: 40px;
            height: 40px;
            position: absolute;
            left: 5px;
            top: 50%;
            margin-top: -20px;
            background-color: #ccc;
            font-size: 40px;
            text-align: center;
            cursor: pointer;
        }
        #arr #right{
            right: 5px;
            left: auto;
        }
    </style>
</head>
<body>
    <div id="box">
        <div class="inner">
            <ul>
                <li><img src="images/1.jpg" alt=""/></li>
                <li><img src="images/2.jpg" alt=""/></li>
                <li><img src="images/3.jpg" alt=""/></li>
                <li><img src="images/4.jpg" alt=""/></li>
                <li><img src="images/1.jpg" alt=""/></li>
            </ul>
        </div>
        <div id="arr">
            <span id="left"><</span>
            <span id="right">></span>
        </div>
    </div>
</body>
</html>
<script>
    function $(id){return document.getElementById(id)}
    var ul = $("box").children[0].children[0];
    var arr = $("arr");
    $("box").onmouseover = function () {
        $("arr").style.display = "block";
    }
    $("box").onmouseout = function () {
        $("arr").style.display = "none";
    }
    var start = 0,end =0;


    $("left").onclick = function () {
        end +=300;
    }
    $("right").onclick = function () {
        end -=300;
    }

    setInterval(function () {
        if(end>=0){
            end=0;
        }else if(end<=-1200){
            end=-1200;
        }
        start = start + (end-start)/10;
        ul.style.left = end+"px";
    },30);

</script>