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Cody Liske
2,308 PointsUsing toUpperCase and toLowerCase
Got it this time, sorry guys.
In the code below (I apologize if I was supposed to use some kind of code tags for this post, I'm kind of new), I have written a simple quiz application game for my javascript front end course and my code as is works fine, however when i exchange the toUpperCase's for toLowerCase's I am provided with a false boolean value even if the answer is correct (For example, in my second question "Is a dog an animal?" typing yes gave me a false value when using toLowerCase). Unsatisfied with just knowing the toUpperCase works, I was wondering if anyone could tell me why the toLowerCase that I tried initially did not work. Thank you for your time.
//Quiz application putting together concepts I have been learning, including combined conditional statements
//number correct is 0 at beginning
var numCorrect = 0;
//Questions are asked and correct answers stored
var guess1 = prompt("What is two plus two?");
if (parseInt(guess1) === 4 || guess1.toUpperCase === "FOUR") {
alert("You guessed it right! 1 point");
numCorrect += 1;
} else {
alert("Sorry you guessed wrong. No points");
}
var guess2 = prompt("Is a dog an animal?");
if (guess2.toUpperCase === "YES") {
alert("You guessed it right! 1 point");
numCorrect += 1;
} else {
alert("Sorry you guessed wrong. No points");
}
var guess3 = prompt("What is the capitol of North Carolina?");
if (guess3.toUpperCase === "RALEIGH") {
alert("You guessed it right! 1 point");
numCorrect += 1;
} else {
alert("Sorry you guessed wrong. No points");
}
var guess4 = prompt("How many feet are in a yard?");
if (guess4.toUpperCase === "THREE" || parseInt(guess4) === 3) {
alert("You guessed it right! 1 point");
numCorrect += 1;
} else {
alert("Sorry you guessed wrong. No points");
}
var guess5 = prompt("What does html stand for?");
if (guess5.toUpperCase === "HYPER TEXT MARKUP LANGUAGE") {
alert("You guessed it right! 1 point");
numCorrect += 1;
} else {
alert("Sorry you guessed wrong. No points");
}
if (numCorrect === 5) {
prize = ' a Gold Crown!'
} else if (numCorrect >= 3) {
prize = ' a Silver Crown!'
} else if (numCorrect >= 2) {
prize = ' a Bronze Crown!'
} else {
prize = ' no prize'
}
document.write('<p>Congratulations! You got ' + numCorrect + ' questions right! you win' + prize + '</p>');
Michael Afanasiev
Courses Plus Student 15,597 PointsHey Cody,
That's ok, I have done it for you. Also keep in mind that you can just edit your post by using the "..." at the bottom of your question, a small context menu will pop with "Edit Question" or "Delete Question". :D
3 Answers
Steven Parker
243,228 PointsWhen calling a function or method, you must include a set of parentheses after the function name, even if the function does not require any arguments. So instead of:
if (guess2.toUpperCase === "YES") {
You should have:
if (guess2.toUpperCase() === "YES") {
Dale Severude
Full Stack JavaScript Techdegree Graduate 71,350 PointsIf I understand this question correctly, if you change the condition, then you have to change the answer as well:
if (guess2.toUpperCase() === "YES") {
if (guess2.toLowerCase() === "yes") {
Also include parenthesis () at the end.
Cody Liske
2,308 PointsThank you all for the feedback on all of my posts! I will be a better poster next time. I was certainly perplexed and now I understand my mistake. I just wanted to ensure I knew how to properly use methods before moving on to harder projects, those parenthesis slipped my mind.
Michael Afanasiev
Courses Plus Student 15,597 PointsCody, you're awesome. Keep on hacking! :)
Cody Liske
2,308 PointsCody Liske
2,308 PointsI really apologize for triple posting until i got the code block right. If anyone can also tell me how to delete my other posts on this subject I will gladly do so.