JavaScript - 函数之间的随机数和变量

Question

我是 JavaScript 新手，对于框架的每个滚动，我都有两个滚动函数。我无法将每个卷的值放入框架函数中以供调用和使用。如果有人可以提供帮助，那就太好了!预先感谢，我的代码如下。

var Bowling = function() {
  var STARTING_TOTAL = 0;
  ROLL_ONE = Math.floor(Math.random() * 11);
  ROLL_TWO = Math.floor(Math.random() * 11);
  this.score = STARTING_TOTAL;
  var firstScore;
  var secondScore;
  var totalScore;

  Bowling.prototype.firstRoll = function() {
     firstScore = ROLL_ONE
     return firstScore;
  };

  Bowling.prototype.secondRoll = function() {
     secondScore =  Math.floor(Math.random() * 11 - firstScore);
     return secondScore;

  };

  Bowling.prototype.frameScore = function () {
     totalScore = firstScore + secondScore
    return totalScore;
  };

};

Answer 1

我只能猜测你想要实现什么目标。我稍微重构了你的代码:

var Bowling = function () {
  var STARTING_TOTAL = 0;
  this.score = STARTING_TOTAL; // remains unused; did you mean "totalScore"?
  this.firstScore = 0;
  this.secondScore = 0;
};

Bowling.prototype.firstRoll = function () {
  this.firstScore = Math.floor(Math.random() * 11);
  return this.firstScore;
};

Bowling.prototype.secondRoll = function () {
  this.secondScore = Math.floor(Math.random() * 11 - this.firstScore);
  return this.secondScore;

};

Bowling.prototype.frameScore = function () {
  this.totalScore = this.firstScore + this.secondScore
  return this.totalScore;
};

// now use it like this:
var bowling = new Bowling();
console.log(bowling.firstRoll());
console.log(bowling.secondRoll());
console.log(bowling.frameScore());

但是，在我的方法中，firstScore 和 secondScore 是公共(public)属性。