# Array.chunk

## Function

Split the array into a two-dimensional array according to the specified size.

## Syntax

```bt
array.chunk(size)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| size | Number | No | 1 | The number of elements in each group. |

## Return value

| Type | Description |
| ------ | ------ |
| Array | Split two-dimensional array. |

## Code Example

```bt
result = [1, 2, 3, 4, 5].chunk(2)

// Output: [[1,2],[3,4],[5]]
print result
```

## Notes

- Returns an empty array when size is less than or equal to 0.