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

Chris Carr
seal-mask
.a{fill-rule:evenodd;}techdegree
Chris Carr
Front End Web Development Techdegree Student 12,900 Points
Posted by Chris Carr
.a{fill-rule:evenodd;}techdegree
Chris Carr
Front End Web Development Techdegree Student 12,900 Points

Task 1 not parsing.

Not sure what I'm doing wrong.

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

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

2 Answers

Vivek Gupta
Vivek Gupta
315 Points
Vivek Gupta
Vivek Gupta
315 Points

Hello friend the answer of this challenge is:

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

for(var item in shanghai){
  console.log(item);
}

you should keep in mind that the "for in" loop loops through the properties of an array

for(var item in shanghai){
  console.log(item);
}

so here the array is shanghai and the looping variable is item during each time the loop iterates the value of item variable is made equal to the property of shanghai array

Chris Carr
seal-mask
.a{fill-rule:evenodd;}techdegree
Chris Carr
Front End Web Development Techdegree Student 12,900 Points
Chris Carr
.a{fill-rule:evenodd;}techdegree
Chris Carr
Front End Web Development Techdegree Student 12,900 Points 
var shanghai = {
  population: 14.35e6,
  longitude: '31.2000 N',
  latitude: '121.5000 E',
  country: 'CHN'
};

for (var prop in shanghai) {
  console.log (prop);
  console.log (shanghai.[prop]);
}

is still giving me an error of task 1 no parsing.

Vivek Gupta
Vivek Gupta
315 Points
Vivek Gupta
Vivek Gupta
315 Points 
for (var prop in shanghai) {
  console.log (prop);
  //console.log (shanghai.[prop]); dont use this line
}