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 Loops, Arrays and Objects Tracking Data Using Objects Access and Set Object Properties

Not sure what I need to do. Where is this related in what video?

Add a new property -- country -- to newYork. Don't change the original object, just add this new property using a = sign to assign the country property to USA.

var newYork = {
  population: 100, 
  latitude: '40.7127 N',
  longitude: '74.0059 W'

newYork.population = 8.406e6;
<!DOCTYPE html>
  <meta charset="utf-8">
  <title>JavaScript Objects</title>
<script src="script.js"></script>

7 Answers

18,813 Points

You can do this using the same technique you used in the first part of the challenge.

newYork.country = 'USA';

Edit - To clarify, setting a property will 'create' it if there is no property by that name.

Ah, duh.. forgot the 'USA'

Ran into the same issue. Just add the ' ' to make the value a string so it responds correctly.

Adam Maley
Adam Maley
5,946 Points

they did not address this in the videos...

-- country -- What are the dashes for in the country? Is it to say that it's property of an object?

Caden Ingram
Caden Ingram
6,482 Points

i cant do it, it wont let me do newYork.country = 'USA';

var newYork = { population: 100, latitude: '40.7127 N', longitude: '74.0059 W' };

newYork.population = 8.406e6;

//places a new poperty to newYork assigned country

newYork.country = "USA";