javascript - 通过将 IF 语句和 FOR 循环放在括号中，函数会变得有问题

Question

下面的代码工作正常。但如果我把 IF 和 FOR 放在括号里。然后就不行了，

function power(base, exponent) {
  if (exponent == undefined)
    exponent = 2;
  result = 1;
  for (var count = 0; count < exponent; count++)
    result *= base;
  return result;
}
console.log(power(4, 3)); //64
console.log(power(4)) //16

Answer 1

我能够运行带括号的代码。也许您不小心将 result = 1 或 return result 放在括号内？

function power(base, exponent) {
  if (exponent == undefined) {
    exponent = 2;
  }

  result = 1;

  for (var count = 0; count < exponent; count++) {
    result *= base;
  }

  return result;
}

console.log(power(4, 3)); // 64
console.log(power(4)) // 16