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

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

Here's the example:

```js
var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"]
};

ourDog.bark = "bow-wow";
```

Here's a solution:

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

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