Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Random Number Challenge

Posted by Geovani Mejia
.a{fill-rule:evenodd;}techdegree
Geovani Mejia
Front End Web Development Techdegree Student 7,940 Points

Feeback on code challegene before looking at the answer

function numberSelected (minNumber, maxNumber) {

var randomNumber = Math.floor(Math.random() * (maxNumber - minNumber)) + minNumber;

document.write('<h1>'+ randomNumber + '</h1>');

}

numberSelected(2,10); numberSelected(2,20); numberSelected(2,30);

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

If you want to include the upper limit in the generated value range, you need to add 1 to the multiplier:

(maxNumber - minNumber + 1)