freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/add-new-properties-to-a-javascript-object/index.md

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title: Add New Properties to a JavaScript Object
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# Add New Properties to a JavaScript Object


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## Solutions

<details><summary>Solution 1 (Click to Show/Hide)</summary>

```js
var myDog = {
  name: "Happy Coder",
  legs: 4,
  tails: 1,
  friends: ["freeCodeCamp Campers"]
};

// Only change code below this line.
myDog.bark = "woof";
```
</details>