Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops A Closer Look at Loop Conditions

Nicholas Davis
PLUS
Nicholas Davis
Courses Plus Student 6,345 Points

RE: Line 15 it says "It took the computer NaN attempts to get it right, I am trying to understand how it is saying that.

Hello,

The code bellow sends back NaN when trying to say how many attempts it took the computer, I have tried debugging via my eyes but I cant understand how its getting to that result. any help is appreciated. :)

var upper = 10000;
var randomNumber = getRandomNumber(upper);
var guess;
var attempts;

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

while ( guess !== randomNumber ) {
  guess = getRandomNumber( upper );
  attempts += 1;
} 
document.write("<p>The random number was: " + randomNumber + "</p>");
document.write("<p>It took the computer " + attempts + " attempts to get it right!</p>");

1 Answer

Nicholas Davis
PLUS
Nicholas Davis
Courses Plus Student 6,345 Points

Nevermind I figured it out, I forgot to add = 0 at line 4.