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

Posted by Evan Hagerty
Evan Hagerty
9,074 Points

my code seems to be running an infinite loop and i can't seem to find the issue.

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; }

do { guess = prompt('I am thinking of a number between 1 and 10. What is it?'); 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 get the number ' + randomNumber);

1 Answer

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

This loop only ends when you guess the number. If you try every number from 1 to 10, you should always get it.

But you can also provide an extra way out, like adding this line right after the "prompt":

  if (guess == "quit") break;