To calculate median with JavaScript, we can sort the numbers and get the middle value.

For instance, we write

```
const median = (numbers) => {
const sorted = Array.from(numbers).sort((a, b) => a - b);
const middle = Math.floor(sorted.length / 2);
if (sorted.length % 2 === 0) {
return (sorted[middle - 1] + sorted[middle]) / 2;
}
return sorted[middle];
};
console.log(median([4, 5, 7, 1, 33]));
```

to define the `median`

function.

In it, we call `sort`

on the copied `numbers`

array after copying it with `Array.from`

to sort the numbers in ascending order.

Then we check if the length of the `sorted`

array is event.

We get the `middle`

index by taking the floor of the length divided by 2.

If it is, then we take the average of the 2 middle numbers.

Otherwise, we return the middle number.