Find Factorial Positive and Negative Number

// Factorial .....
function Factorial(n){
let result=1;
if(n>=0){
for(let i=n;i>1;i--){
result*=i
}
}else{

for(let i=n;i<0;i++){
result*=Math.abs(i)
}
result*=-1

}

return result
}

console.log(Factorial(-5))