FAQ: Code Challenges - Code Challenge


This community-built FAQ covers the “Code Challenge” exercise from the lesson “Code Challenges”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Web Development

Learn Express

FAQs on the exercise Code Challenge

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head here.

Looking for motivation to keep learning? Join our wider discussions.

Learn more about how to use this guide.

Found a bug? Report it!

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!


I’ve been working on the express.js code challenges and have questions that hopefully somebody can help with.
For challenge number 6, here is my code https://gist.github.com/49bd6c5578762f4bc9447f2b9ecac9b4
My question is from line 32 where the code is:
currencies[currencyName] = newCountries;
I understand that this is assigning the new array from req.query to currencies[currencyName]. My question is doesn’t this erase the countries key from the currencies object? In my first solution, I wrote the code below:
currencies[currencyName][countries] = newCountries;
And it didn’t pass the test. Any thoughts on what happens to the original countries key in the currencies object? Doesn’t it get erased?


I got stuck on this too.
They sending query with countries key and array. I think it’s not right way.