<!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> var sum = 0; for (var j = 1; j <= 10; j++) { var val = 1; for (var i = 1; i <= j; i++) { val *= i } sum += val; } console.log(sum); </script> </body> </html>
