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JavaScript

ywang04
ywang04
6,762 Points
Posted by ywang04
ywang04
6,762 Points

In this video, the correctGuess is unnecessary.

var randomNumber = getRandomNumber(10);
var guess;
var guessCount = 0;
//var correctGuess = false;

function getRandomNumber( upper ) {
  var num = Math.floor(Math.random() * upper) + 1; 
  return num;
}

while (guessCount < 10) {
  guess = prompt('I am thinking of a number between 1 and 10. What is it?');
  guessCount += 1;
  if (parseInt(guess) === randomNumber) {
//    correctGuess = true;
    break;
  }  
} 

document.write('<h1>You guessed the number!</h1>');
document.write('It took you ' + guessCount + ' tries to guess the number ' + randomNumber);

I have commented out "correctGuess", the program is working fine either. Thus, what I'm thinking is "correctGuess" is unnecessary as we are using break keyword to exit the while loop instead using this flag to exit.

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

You're right, it serves no purpose.

In the above code, correctGuess was only assigned, never used. If you had provided a link to the video, I would have taken a peek to see if they do something with it later, but simply based on the code above it's not needed.

ywang04
ywang04
6,762 Points
ywang04
ywang04
6,762 Points

The correctGuess is used in this course later. Thanks for your help.