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JavaScript

Posted by Nathaniel Johnston
Nathaniel Johnston
5,122 Points

Possibly gather some feedback on my Conditional Challenge?

Just trying to gather some feedback on my code for the conditional challenge.

I tried using 

if (conditional){
return counter
}

but that would just end my program. So this what I have so far. 

// This is the counter
var counter = 0;

// This is Question 1
var qOne = parseInt(prompt('What is 5 - 2?'));

// If user's answer is correct, counter adds 1
if (qOne === 3){
  alert('That is correct.')
  counter++;
} else {
  alert ('That is incorrect')
  counter = counter;
}

// This is Question 2
var qTwo = parseInt(prompt('What is 20 - 5?'));

// If user's answer is correct, counter adds 1, otherwise counter doesn't change
if (qTwo === 15){
  alert('That is correct.')
  counter++;
} else {
  counter = counter;
}

// This is Question 3
var qThree = prompt('What is the capital of Washington State?');

// If user's answer is correct, counter adds 1, otherwise counter doesn't change
if (qThree === 'Olympia' || qThree === 'olympia'){
  alert('That is correct.')
  counter++;
} else {
  alert ('That is incorrect');
  counter = counter;
}

// This is Question 4
var qFour = prompt('Stop signs are what color in the US?');

// If user's answer is correct, counter adds 1, otherwise counter doesn't change
if (qFour === 'Red' || qFour === 'red'){
  alert('That is correct.')
  counter++;
} else {
  alert ('That is incorrect');
  counter = counter;
}

// This is Question 5
var qFive = parseInt(prompt('What is 5 * 10'));

// If user's answer is correct, counter adds 1, otherwise counter doesn't change
if (qFive === 50){
  alert('That is correct.')
  counter++;
} else {
  alert ('That is incorrect');
  counter = counter;
}

// Player rewards based on correct answers
if (counter === 5){
    document.write('You earned a gold crown. You scored ' + counter +' out of 5.');
  } else if (counter === 3 || counter === 4){
    document.write('You earned a silver crown. You scored ' + counter +' out of 5.');
  } else if (counter === 1 || counter === 2){
    document.write('You earned a bronze crown. You scored ' + counter +' out of 5.');
  } else {
    document.write("Apologies, you got all the questions wrong. No crown for you.");
}

1 Answer

egaratkaoroprat
egaratkaoroprat
16,630 Points
egaratkaoroprat
egaratkaoroprat
16,630 Points

Hey Nathaniel

Return is only used for functions to send information back to its caller. If you for example have a function bigger() which takes two arguments and returns the bigger number of those two and assign it to a variable, then you need to use return. And every time a return happens, it will stop the rest of the function and proceed with the rest of your program.

It would look something like this:

function bigger(a, b) {
  if (a > b) {
    return a;
  }
  else {
    return b;
  }
}

To get the bigger value and store it to a variable, then you will probably call it like this:

var biggerNum = bigger(3, 5); //in this case '5' will be returned and get stored in the variable biggerNum

I hope this helps you to understand about 'return'.

Happy coding! Egarat