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 Accessing All of the Properties in an Object

Jasper Kop
Jasper Kop
10,423 Points

I really don't understand the question. what do you want me to do? because I'm convinced that I'm doing it write.

I added the var prop;

but if I understand the material write I don't need to. I just added it because I don't understand what I'm doing wrong

script.js
var shanghai = {
  population: 14.35e6,
  longitude: '31.2000 N',
  latitude: '121.5000 E',
  country: 'CHN'
};

var prop;

for (prop in shanghai){
  console.log(prop);
}
index.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Objects</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

Richard Verbraak
Richard Verbraak
7,739 Points

Hi Jasper,

You don't need to make a variable called prop. The shanghai variable has a few properties(props) like population, longitude etc. and the code below that is called a loop. It will loop through the properties in shanghai and log them to the console, one by one.

Let me know if you need any further explanation!