<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Frog</title>
<script type="text/javascript">
window.onscroll = infinity;
function infinity () {
document.write("<img src='frog.gif'>" + "<br/>");
}
while(window.onscroll){
infinity();
}
</script>
</head>
<body>
<img src='earth.png'>
<br/>
<img src='tiger.jpg'>
<br/>
</body>
</html>
大家好,我想知道当我每次向下滚动时青蛙图像再次出现时,我将如何循环青蛙提前谢谢!