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 Modify Object Properties

Kirok James
seal-mask
.a{fill-rule:evenodd;}techdegree
Kirok James
Full Stack JavaScript Techdegree Student 876 Points
Posted by Kirok James
.a{fill-rule:evenodd;}techdegree
Kirok James
Full Stack JavaScript Techdegree Student 876 Points

shortcut prod.inventory instead of product.inventory works

How is it possible that we can use prod.inventory? Javascript automatically find what we trying to access just by passing shortcut prod.inventory instead of product.inventory as long as we have only one inventory in the whole code?

thank you for answer

1 Answer

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

The term "prod" is a function parameter. It doesn't represent "product" until the function is called and that is passed as the first argument in the call. And that reference is only valid inside the function.

You could have many other items in the code, but anytime the function is called one of them would need to be named as the argument. Then that other one would be accessed inside the function code as "prod".