freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/object-oriented-programming/understand-own-properties/index.md

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Understand Own Properties

Understand Own Properties

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Problem Explanation

In the example code given you will see a new array ownProps[] intialised followed by a for...in statement to loop through the properties of duck and then use a push() statement to fill in the new array. The same method must be followed for the canary object.

Simply replace the duck object in the 'for...in' statement with the canaryobject to pass all test cases.

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Solutions

Solution 1 (Click to Show/Hide)

let canary = new Bird("Tweety");
let ownProps = [];
// Add your code below this line
for (let property in canary) {
  if (canary.hasOwnProperty(property)) {
    ownProps.push(property);
  }
}