画一个抛物线

随意发挥,只有半边的,无实际意义,仅为消遣!

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>xy2</title>
<script type="text/javascript" src="jquery-1.4.4.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
    for(var i=0;i<50;i=i+0.1){
        var y=25*i;
        var x=2*i*i+3*i+10;
        $('body').append('<div style="left:'+y+'px;top:'+x+'px"></div>');
    }

});
</script>
<style type="text/css">
div{ width:2px; height:2px; background-color:#F00; position:absolute;}
</style>
</head>

<body>

</body>
</html>

 

 

 

posted @ 2013-02-01 11:59  qīqíqǐqì  阅读(299)  评论(1编辑  收藏  举报