doing a factorial using a for loop

mattrd · July 27th, 2003, 10:14 PM

can anyone tell me how to do a factorial using a for loop?
I understand how to make a list adding a number to each line such as

for (i = 0; i <= 5; i++)
{
document.write("The number is " + i)
document.write("<br>")
}

but can anyone tell me how to do a factorial using a for loop???

pgtips · July 28th, 2003, 05:11 AM

Code:

var factorial = 1;
for (i = 1; i <= 5; i++)
{
  factorial *= i;
}

will do factorial 5, I'm sure you can figure out from there how to generalise it...