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) Working With Numbers The Random Challenge Solution

Katherine Moreno
Katherine Moreno
1,566 Points

My code works, but it's a lot shorter and different than the suggested solution. Did I do something wrong?

var userInput = prompt("Give me a number between 1 and 100.");
var userInput2 = prompt("Give me a smaller number.");
var userMax = parseInt(userInput);
var userMin = parseInt(userInput2);
document.write(Math.floor(Math.random()*(userMax - userMin) + userMin));

1 Answer

Simon Coates
Simon Coates
28,692 Points

yeah, i think the +1 is important, if the difference between the two numbers is only 1. floor will will always be 0. Math.random is explained as "Return a random number between 0 (inclusive) and 1 (exclusive)". If it were inclusive, your code would be okay, i think.