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 Numbers The Math Object Random Number Challenge – Solution

Nik Oaks
Nik Oaks
8,056 Points
Posted by Nik Oaks
Nik Oaks
8,056 Points

I never declared the prompt as an integer however my code still runs as it should.

my code: https://w.trhou.se/6ch1e3efp2 This isn't the first time this has happened. Now that I know a little more about how to change data types i'm confused why it works.

Nik Oaks
Nik Oaks
8,056 Points
Nik Oaks
Nik Oaks
8,056 Points

Also I forgot to add a floor so I did that and it still works fine,

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Someone happened to ask a very similar question just yesterday!

You're seeing an aspect of JavaScript called type coercion, which is essentially it converting the string into a number for you automatically. For more details on this mechanism, and a demonstration code snippet, see my answer to the previous question.