js实现简单的轮播效果

2022-10-14 13:14:00

<!DOCTYPE html>

<html>

    <head>

        <meta charset="UTF-8">

        <title></title>

        <script type="text/javascript">

            function init(){

                setInterval("changelunbo()",1000);

            }

            var i = 1;

            function changelunbo(){

                i++;

                var imgE = document.getElementById("lunbo");

                imgE.src = "img/2."+i+".jpg";

                if(i == 4){

                    i = 0;

                }

            }

        </script>

    </head>

    <body onload="init()">

        <img src="img/2.1.jpg"/ id="lunbo">

    </body>

</html>

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