使用DOM写出简单的复仇者联盟轮播图_漫威复仇者联盟带js轮播-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_45268202/article/details/122135843

<!DOCTYPE html>
<html lang="en">
<head>
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    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }

        #outer{
            width: 700px;
            margin: 50px auto;
            padding: 10px;
            background-color: greenyellow;
            text-align: center;
        }
        img{
            width: 700px;
            height: 400px;

        }
    </style>
    <script>
        window.onload = function(){
            var prev = document.getElementById("prev")
            var next = document.getElementById("next")
            var img = document.getElementsByTagName("img")[0]
            var info = document.getElementById("info")

            var imgArr = ["./复仇者联盟/1.jpg",
            "./复仇者联盟/2.jpg",
            "./复仇者联盟/3.jpg",
            "./复仇者联盟/4.jpg",
            "./复仇者联盟/5.jpg"]

            var index = 0

            info.innerHTML = "一共" + imgArr.length + "张图片，第" + (index + 1) + "张"

            prev.onclick = function(){
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                img.src = imgArr[index]
                info.innerHTML = "一共" + imgArr.length + "张图片，第" + (index + 1) + "张"

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            next.onclick = function(){
                index++

                if (index > imgArr.length - 1) {
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                img.src = imgArr[index]
                info.innerHTML = "一共" + imgArr.length + "张图片，第" + (index + 1) + "张"
            }

        }
    </script>
</head>
<body>
    <div id="outer">
        <p id="info"></p>
        <img src="./复仇者联盟/1.jpg" alt="复仇者">
        <button id = "prev"><上一张</button>
        <button id = "next">下一张></button>
    </div>
</body>
</html>