轮播图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>轮播图</title>

    <script>
        var number=1;
        var img= null;
        function fun(){
            number++;
            if(number>3){
                number=1;
            }
            img= document.getElementById("img");
            img.src="img/banner_"+number+".jpg";
        }

        setInterval(fun,3000);
    </script>
</head>
<body>
      <img src="img/banner_1.jpg" id="img" width="100%">
</body>
</html>

posted on 2019-08-24 00:17 小猪_佩奇阅读(139) 评论(0) 编辑收藏举报