• js实现轮播图


     1 <!DOCTYPE html>
     2 <html lang="en">
     3 <head>
     4     <meta charset="UTF-8">
     5     <title>轮播图</title>
     6     <style type="text/css">
     7         *{
     8             margin: 0;
     9             padding:0;
    10         }
    11         .carousel{
    12             margin:0 auto;
    13             width:400px;
    14             height: 300px;
    15             position: relative;
    16         }
    17         span{
    18             width:20px;
    19             height:20px;
    20             background: rgba(0,0,0,.6);
    21             border-radius: 50%;
    22         }
    23         a{
    24             text-decoration: none;
    25             color:#fff;
    26         }
    27         p{
    28             width:200px;
    29             text-align: center;
    30             line-height: 20px;
    31             position: absolute;
    32             top:260px;
    33             left:100px;
    34             display: flex;
    35             justify-content: space-around;
    36         }
    37     </style>
    38     <script type="text/javascript">
    39         window.onload =function () {
    40             var aNode = document.getElementsByTagName("a");
    41             var divNode = document.getElementsByTagName("div")[0];
    42             var imgNode = document.createElement("img");
    43             for (var position in aNode) {
    44                 aNode[position].onclick = function () {
    45                     var index = this.innerText;
    46                     carousel(index);
    47                 }
    48             }
    49             function carousel(index) {
    50                 imgNode.src = 'images/' + index + '.jpg' + '/';
    51                 divNode.appendChild(imgNode);
    52             }
    53             var i = 1;
    54             imgNode.src = 'images/' + i + '.jpg' + '/';
    55             function change() {
    56                 imgNode.src = 'images/' + i + '.jpg' + '/';
    57                 i++;
    58                 if (i == 7) {
    59                     i = 1;
    60                 }
    61             }
    62             divNode.appendChild(imgNode);
    63             setInterval(change, 1500);
    64         }
    65     </script>
    66 </head>
    67 <body>
    68     <div class="carousel">
    69         <p>
    70             <span><a href="#" onclick="carousel(1)">1</a></span>
    71             <span><a href="#" onclick="carousel(2)">2</a></span>
    72             <span><a href="#" onclick="carousel(3)">3</a></span>
    73             <span><a href="#" onclick="carousel(4)">4</a></span>
    74             <span><a href="#" onclick="carousel(5)">5</a></span>
    75             <span><a href="#" onclick="carousel(6)">6</a></span>
    76         </p>
    77     </div>
    78 </body>
    79 </html>

    注意:图片需要自己去添加images文件,大小我用的是400*300,可以更改的!

    还有其他方法使用js实现轮播图,比如点击以后让图片transform:translate;点击后改变其display,点击后改变z-index,不点击让他自己产生动态移动就是使用:setInterval

    技术不重要,重要的是思想!

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  • 原文地址:https://www.cnblogs.com/ldlx-mars/p/6810486.html
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