forEx2.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>자바스크립트 for문 예제</title>
		<style type="text/css">
			th { background: yellow;	}
			td {
				width:100px;
				text-align: center;
			}
		</style>		
		<script type="text/javascript">
			var sum=0;
			
			document.write("<table border=\"1\">");
			document.write("<tr><th>i</th><th>sum</th></tr>")
			
			for(var i =1; i <= 10; i++){
				sum += i;
				document.write("<tr><td>" + i +"</td>"+"<td>"+ sum+"</td></tr>")
			}
			document.write("</table>")
		</script>
	</head>
	<body>
		
	</body>
</html>