我的阶乘程序不起作用（在javascript中）

Question

function factorial(num) {
  var factorialValue = 1;
  if (num === 0) {
    return factorialValue;
  } else {
    for (var i = num; i <= 1; i--) {
      factorialValue *= i;
    }
    return factorialValue;
  }
}

console.log(factorial(10));
console.log(factorial(5));
console.log(factorial(3));
console.log(factorial(0));

我的代码有什么问题？它仅适用于1。我的代码有什么问题？它只工作1。

Answer 1

function factorial(num) {
  var factorialValue = 1;
  for (var i = num; i > 1; i--) {
    factorialValue *= i;
  }
  return factorialValue;
}

console.log(factorial(10));
console.log(factorial(5));
console.log(factorial(3));
console.log(factorial(0));

Answer 2

希望您在这里是您的解决方案：-）

function factorial(num) {
  var factorialValue = 1;
  if (num === 0) {
    return factorialValue;
  } else {
    for (var i = num; i>1; i--) {
      factorialValue = factorialValue * i;
    }
    return factorialValue;
  }
}

console.log(factorial(10));
console.log(factorial(5));
console.log(factorial(3));
console.log(factorial(0));