Code review assignment

Code cleaned up.html

<!-- I added the .toUpperCase() function to my original script so the user should be able to type answers either capitalized or lowercase -->
<script>
  var answer1 = prompt("Welcome to Harry Potter trivia! (Special Hermione Granger Edition) What is Hermione Granger's middle name?");
  while (answer1.toUpperCase() !== "JEAN") {
    var answer1 = prompt("Nope! Try again");
  }
  if (answer1.toUpperCase() === "JEAN") {
    alert("Correct!");
  }
  else {
    alert("Nope! Try again");
  }

  var answer2 = prompt("Who did Hermione punch in the face in the movie 'Harry Potter and the Prisoner of Azkaban'?");
  while (answer2.toUpperCase() !== "DRACO MALFOY") {
    var answer2 = prompt("Nope! Try again (make sure to have first and last name)");
  }
  if (answer2.toUpperCase() === "DRACO MALFOY") {
    alert("Correct!");
  }
  else {
    alert("Nope! Try again");
  }

  var answer3 = prompt("Who was Hermione's date to the Yule Ball?")
  while (answer3.toUpperCase() !== "VICTOR KRUM") {
    var answer3 = prompt("Nope! Try again (make sure to have first and last name");
  }
  if (answer3.toUpperCase() === "VICTOR KRUM") {
    alert("Correct!");
  }
  else {
    alert("Nope! Try again");
  }

  var answer4 = prompt("What do Hermione's parents do for a living?")
  if (answer4.toUpperCase() === "DENTISTS") {
    alert("Correct!");
  }
  else if (answer4.toUpperCase() === "DENTIST") {
    alert("Correct!");
  }
  else if (answer4.toUpperCase() === "THEY'RE DENTISTS") {
    alert("Correct!");
  }
  else if (answer4.toUpperCase() === "THEY ARE DENTISTS") {
    alert("Correct!");
  }
  else {
    alert("It's okay, this was a hard one");
  }

  alert("Congrats on making it through Hermione Granger trivia! Here is your reward: http://www.buzzfeed.com/danieldalton/boss-witch")
</script>

Code reworked as function.html

<!-- I could see that I was reusing the same code over and over for this assignment, so I decided to try making a function! 
I added three chances to get the right answer for the question, and I wanted to make the user able to answer things like "Malfoy" instead 
of the full name, so I was searching for some kind of contains function based on my SQL knowledge and it sounds like there isn't a widely 
supported one in Javascript. I used an article where someone used the indefOf() function to make something with a similar effect: 
http://adripofjavascript.com/blog/drips/determining-if-a-string-contains-another-string-in-javascript-three-approaches.html -->
<script>
  var userAnswer, guessCounter

  function aContainsB (a, b) {
    return a.indexOf(b) >= 0;
  }

   function aDoesNotContainB (a, b) {
    return a.indexOf(b) === -1;
  } 

  function triviaQuestion(question, correctAnswer) {
    userAnswer = prompt(question);
    if (aContainsB(correctAnswer, userAnswer.toUpperCase())) {
      alert("Correct!");
    }
    guessCounter = 2
    while (aDoesNotContainB(correctAnswer, userAnswer.toUpperCase()) && guessCounter >0) {
      if (guessCounter > 1) {
        userAnswer = prompt("Nope! You have " + guessCounter + " more guesses. Try again. " + question);
      }
      else {
        userAnswer = prompt("Nope! You have 1 more guess. Try again. " + question); 
      }
    guessCounter --;
    }
  }

  alert("Welcome to Harry Potter trivia (Special Hermione Granger edition!) Are you ready to play?");
  triviaQuestion("What is Hermione Granger's middle name?","JEAN");
  triviaQuestion("Who did Hermione punch in the face in the movie 'Harry Potter and the Prisoner of Azkaban?'","DRACO MALFOY");
  triviaQuestion("Who was Hermione's date to the Yule Ball?","VICTOR KRUM");
  triviaQuestion("What do Hermione's parents do for a living?","DENTISTS");

  alert("Congrats on making it through Hermione Granger trivia! Here is your reward: http://www.buzzfeed.com/danieldalton/boss-witch") 
</script>