效果图：
JavaScript实现九九乘法表_JavaScript

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<script>
		window.onload=function(){
			for (var  i = 1;i<10;i++) {
				for(var j = 1;j<=i;j++){
					document.write("    "+j+"*"+i+"="+(i*j));

				}
				document.write("<br>")
			}
		}
	</script>
	<body> 
	</body>
</html>