Question

我正在尝试为多个函数参数编写一个简单的比较语句，它绕过了错误。 tbh，我什至不确定我是否能够比较这些参数。

我试图添加一个嵌套if来提取错误，并且它返回未知异常。（请取消注释嵌套以查看行为）

var names = ["Hole-in-one!", "Eagle", "Birdie", "Par", "Bogey", "Double Bogey", "Go Home!"];
function golfScore(par, strokes) {
  if ((par || strokes) <= 0) {
    /*if (par) {
      return "Please enter a value greater than " + par + " for Par";
    }
    else if (strokes) { */
      return "Please enter a value greater than " + strokes + " for Strokes";
    }
  else if (strokes == 1) {
    return names[0];
  }
  else if (strokes <= (par - 2)) {
    return names[1];
  }
  else if (strokes == (par - 1)) {
    return names[2];
  }
  else if (strokes == (par)) {
    return names[3];
  }
  else if (strokes == (par + 1)) {
    return names[4];
  }
  else if (strokes == (par + 2)) {
    return names[5];
  }
    return names[6];
}

// Change these values to test
console.log(golfScore(0,1));console.log(golfScore(5,4));

Answer 1

((par || strokes) <= 0)

||使它评估par或stroke是否不是“假”数据类型（假，空，未定义）。基本上，您正在尝试将布尔值与数字进行比较。相反，您应该将每个变量都比较为0

(par <= 0 || strokes <= 0)

比较javascript中的函数参数

1 个答案: