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JavaScript项目实战 轮播图(手动切图)

作者:互联网

  1. imgarray是存储图片名的数组,大家把这个改成自己的图片名称就好
  2. querySelector函数获取img元素,可用getElementByID代替

效果演示 轮播图(手动切图)

<!DOCTYPE html>

<head>
    <meta charset="UTF-8">
    <title>轮播图</title>
    <meta name="viewport" content="width=device-width">
    <link rel="stylesheet" href="style.css">
    <style>
        .box {
            width: 900px;
            height: 700px;
            margin: 100px auto;
            background-color: #000;
            position: relative;
        }

        #left,
        #right {
            font-family: 'icomoon';
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: rgb(82, 87, 81, .5);
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            font-size: 30px;
            color: white;
            text-align: center;
            line-height: 50px;
            cursor: pointer;
        }
        #left{
            left: 20px;
        }
        #right{
            right: 20px;
        }
    </style>
</head>

<body>
    <div class="box">
        <img src="" alt="" width="100%" height="100%">
        <div id="left"></div>
        <div id="right"></div>
    </div>

    <script>
        window.onload = function () {
            var i = 1;
            var imgarray = ['0.jpg', '1.jpg', '2.jpg', '3.jpg', '4.jpg', '5.jpg', '6.jpg', '7.jpg', '8.jpg', '9.jpg', '10.jpg'];
            var img = document.querySelector(".box img");
            img.src = imgarray[0];

            var left=document.getElementById("left");
            var right=document.getElementById('right');
            console.log(left);
            left.onclick=function(){
                i--;
                if (i< 0) {
                    i=imgarray.length-1;
                }
                img.src = imgarray[i];
            }
            right.onclick = function () {
                i++;
                if (i >= imgarray.length) {
                    i = 0;
                }
                img.src = imgarray[i];
            }
            
        }
    </script>
</body>

JavaScript实战项目 轮播图(自动切图)

标签:right,轮播,img,切图,JavaScript,jpg,var,imgarray,left
来源: https://blog.csdn.net/u014708644/article/details/121435336