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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects Accessing All of the Properties in an Object

Posted by mo ode
mo ode
4,352 Points

Use a for in loop to log each of the property names of the shanghai object to the console.

Use a for in loop to log each of the property names of the shanghai object to the console.

script.js 
var shanghai = {
  population: 14.35e6,
  longitude: '31.2000 N',
  latitude: '121.5000 E',
  country: 'CHN'
};
for (   property in shanghai ) {
  console.log(property[shanghai]);
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

Brendan Whiting
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points
Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points

They want you to print out just the property, also you need to use either the var keyword when declaring that local variable at the beginning of the loop:

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

FYI, if they wanted you to print out the property value instead if the property name, you could do that with shanghai[property]; property[shanghai] is going to break. shanghai is the object and you access properties either with dot notation or bracket notation with the key name.