javascript 金字塔 

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script type="text/javascript">
	    document.write("<p align='center'>");

		for(var i=1;i<=5;i++){
			for(var j=1;j<=2*i-1;j++){
			 document.write("*");	
			}
			document.write("<br>");
		}
		
       document.write("</p>");
	</script>
</head>
<body>
	
</body>
</html>
posted @ 2018-09-26 01:01  liulonglong  阅读(545)  评论(0)  编辑  收藏  举报