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 Basics (Retired) Creating Reusable Code with Functions Giving Information to Functions

How can I get my codes to run?

function getRandomNumber( upper ){ var randomNumber = Math.floor( Math.round() * upper ) + 1; return randomNumber; } console.log( getRandomNumber(10) );

When I run the code from my workspace unto the browser, I then check the JavaScript console only to see error "NaN" on random.js: 5 i.e the console.log line

Charlie Gallentine
Charlie Gallentine
12,092 Points

It looks like you never called Math.random(), instead you have Math.round() which your Math.floor() is already taking care of.

function getRandomNumber( upper ){ 
var randomNumber = Math.floor( Math.random() * upper ) + 1; 
return randomNumber; 
} 
console.log( getRandomNumber(10) );

1 Answer

Thank you Charlie, I thought I typed in Math.random()