lovecoding
/
Web1020


			
				
					
						
						
							1234567891011121314151617181920212223
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 求阶乘
        function factorial(n){
            var res = 1;
            for(var i = 1;i<=n;i++){
                res *= i;
            }
            return res;
        }
        
        console.log(factorial(12)-factorial(10));
        
    </script>
</body>
</html>