 How do you round a number to a specific decimal point using JavaScript?

JavaScript has a built-in method called `toFixed()` that formats a number using fixed-point notation. The `toFixed()` method takes one number parameter that tells it how many digits to appear after the decimal point. This number can be a value between `0` and `20`.

And the method will return a `string` value representing the new number generated using fixed-point notation.

Here's an example:

```    ```
const number = 42.235888

const newNumber = number.toFixed(2)
// newNumber = 42.24
```
```

Notice that the `.toFixed(2)` method transforms the `42.235888` number to a new version with only 2 decimal points.

What happens if you applied the decimal point to a whole number?

Here's a code example for that:

```    ```
const number = 42

const newNumber = number.toFixed(3)
// newNumber = 42.000
```
```

Notice how the new number created by the `.toFixed(3)` method has three digits behind the decimal point even though they're zero.

Pretty cool, right?

Let's go over one more example where we want to transform a number with decimal points to a rounded whole number.

Here's the code:

```    ```
const number = 42.68231

const newNumber = number.toFixed(0)
// newNumber = 43
```
```

If you give a value of `0` to the `.toFixed()` method, it will round the new number to a whole number.