11 lines
342 B
JavaScript
11 lines
342 B
JavaScript
/* Prompt:
|
|
Generate a JavaScript function that calculates the factorial of a number.
|
|
The function should be named 'factorial' and take one parameter 'n'.
|
|
Return only the function code, no explanation.
|
|
*/
|
|
|
|
function factorial(n) {
|
|
if (n < 0) return undefined;
|
|
if (n === 0 || n === 1) return 1;
|
|
return n * factorial(n - 1);
|
|
} |