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Jeff Xu
10,291 PointsGuess Counter Wrong?
Hi, i think the we should first set a random guess value when we declare the variable. That way, when we enter the loop, we have a guess ready, and if this guess is wrong then we increase the guess counter. If we declare an empty guess variable, then the first guess will always be wrong when there's a small chance the first guess might just be a hit. the following shows my code, a little different than in the video but that's because i always try to do the exercise first and then see the rest of the vid for solution
function randomNumber(upper) {
return Math.floor( Math.random() * upper ) + 1;
}
var randomValue = randomNumber(10000);
var guess = randomNumber(10000);
var guessCount=0;
while(guess !== randomValue) {
guess = randomNumber(10000);
guessCount++
}
console.log(guessCount);
console.log(guess, randomValue);
2 Answers
William Li
Courses Plus Student 26,868 PointsFor this problem, I like do...while loop better, not sure if the lectures you're in so far have covered this loop yet.
var randomValue = randomNumber(10000);
var guess;
var guessCount=0;
do {
guess = randomNumber(10000);
guessCount++;
} while (guess !== randomValue);
do...while loop runs the loop body before checking for loop condition; whereas while loop check the condition before execute loop body.
Matthew Hicks
9,844 PointsAh yes but, the guessCount is set at 0 at the start and not 1. The solution in the video does accuratley log the amount of guesses, where as in your solution, should the computer get it right on the very first guess, the while condition would not be met and the amount of guesses would be logged as 0 rather than 1.
Matthew Hicks
9,844 PointsJust to be clear, I was referring to the original post. William's solution of flipping it to a do-while loop does indeed maintain the correct guess count.