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jsdemo
/
for8.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>for语句</title>
	</head>
	<body>
		<script>
			var num = 0;
			for(var i=1; i<10000; i++){
				num = 0;
				for(var j =1; j<i; j++){
					if(i%j == 0){
						num = num +j;
					}
				}
				if(num == i){
					console.log(i+ "完美数字");
				}
			}


		</script>
	</body>
</html>