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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops `do ... while` Loops

Vince Leung
Vince Leung
4,730 Points
Posted by Vince Leung
Vince Leung
4,730 Points

Javascript answer alternative: do while loop

Hi everyone i have a question regarding do while loop for JS. The answer for the teacher for one of his questions was the following. 

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

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

do {
    guess = prompt("Please guess a number");
    guessCount += 1;
    if (parseInt(guess) === randomNumber) {
        correctGuess = true;
    }

} while (! correctGuess)

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

'''

While my solution is as follows. The result seems to be the same, or maybe im missing something?

''' Javascript

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

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

do {
    guess = prompt("Please guess a number");
    guessCount += 1;

}
 while (parseInt(guess) !== randomNumber)

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

'''

Thanks!

2 Answers

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

Nothing wrong with your solution. But when you have a boolean value you can use to validate, I'd prefer that.

If the variable is properly named, it also makes it more readable.

Ajinkya Borade
PLUS
Ajinkya Borade
Courses Plus Student 16,635 Points
Ajinkya Borade
Ajinkya Borade
Courses Plus Student 16,635 Points

My more of FP approach would be.

const randomNumber = getRandomNumber(10)
Array(randomNumber).fill().forEach(() => `DO your stuff randomNumber times`);