For some reason, my code is not adding the answer and providing me the winning crown. Help!

I checked my code and I answer all the correct answers. But no matter what, it says I answered 0 answers correct. Can someone help?

// quiz begins with no answers

var correct = 0;

// ask the questions

var answer1 = prompt("Name the fastest Thundercat?"); if (answer1.toUpperCase() === "Cheetara") { correct += 1; }

var answer2 = prompt("Who is the pretiest Smurf?"); if (answer2.toUpperCase() === "Vanity") { correct += 1; }

var answer3 = prompt("The ememy of the Autobots"); if (answer3.toUpperCase() === "Decepticons") { correct += 1; }

var answer4 = prompt("He-man says. \"for the power of...\""); if (answer4.toUpperCase() === "Greyskul") { correct += 1; }

var answer5 = prompt("The name of the pig in love with a frog.. is Ms. ___"); if (answer5.toUpperCase() === "Piggy") { correct += 1; }

//ouput results

document.write("<p> You got " + correct + " out of 5 questions correct!</p>");

//rank

if ( correct === 5 ) { document.write("<p><strong>You are the winner of the GOLD CROWN!</strong></p>"); } else if (correct >= 3) { document.write("<p><strong>You are the winner of the Silver Crown!</strong></p>"); } else if (correct >= 2) { document.write("<p><strong>You are the winner of the bronze Crown!</strong></p>"); } else { document.write("<p><strong>You are a loser</strong></p>"); }