guessWithObjects.html

<script>
  var name, age, truth, playAgain, yesOrNo, randomNumber, game, newGame, unoMas;

  var game = function()
  {
    this.playCount = 0;
    //takes yes/no input, sanitizes user input, returns yes or no
    this.yesOrNo = function (input) 
    {
      var output = input.toLowerCase();
      while (output !== "yes" && output !== "no") //keeps re-asking you if you don't say Y or N
      {
        var output = (prompt("No, silly. Type 'yes' or 'no'")).toLowerCase();
      }
      return output;
    }

    //generates a random integer between a user-generated minimum and maximum
    this.randomNumber = function (min, max)
    {
      return (Math.floor(Math.random() * max) + min); //min is added because Math.floor rounds down and 
    }

    //main game 
    this.guessLoop = function(minimum, maximum)
    {
      var actual = this.randomNumber(minimum, maximum);
      var guess = prompt("I'm thinking of a number between " + minimum + " and " + maximum + ". Guess it! (You get 3 guesses!)");
      var i = 0;

      while (guess <= maximum && guess >= minimum && i < 3)
      {
        if (guess != actual) //keeps re-asking you if you guess wrong
        {
           guess = prompt("Not quite. You were off by " + (Math.abs(actual-guess)) + ". Guess again.");
        }
        else  //Don't need to specify the inverse condition
        {
          break;
        }
        i++;
      }

      if (guess == actual)
      { 
        alert("Well done! You got it!");
      }
      else
      {
        alert("Sorry, you ran out of guesses!");
      }
      this.playCount++;
    }
    this.playAgain = function (min, max)
    {
      do {
        var answer;
        this.guessLoop(min,max);
        answer = prompt("Would you like to play again? (Yes or No)");
        answer = newGame.yesOrNo(answer);
        this.playCount++;
      }
      while (answer == "yes");
      alert("Thanks for playing! You played " + newGame.playCount + " times. As a reward, here's a rad website!");
      window.open("http://www.jakehawken.com");
    }
  }

  newGame = new game ();

  name = prompt("Well hello there! What's your name?");
  age = prompt("Hi, " + name + "! Pleased to meet you. How old are you?");
  truth = prompt("Really? " + age + "? Is that your real age?");

  truth = newGame.yesOrNo(truth);

  if (truth == "yes")
  {
    alert("Ok, I believe you. Click OK or hit Enter to get started.");
  }
  else
  {
    alert("Well, that was a weird thing to lie about... Alright, let's get started.");
  }

  newGame.guessLoop(1,10);
  unoMas = newGame.yesOrNo(prompt("Would you like to play again? (yes or no)?"));

  if (unoMas == "yes")
  {
    newGame.playAgain(1,20);
  }
  else
  {
    alert("Thanks for playing! You played " + newGame.playCount + " times. As a reward, here's a rad website!");
    window.open("http://www.jakehawken.com");
  }
</script>