> ## Documentation Index
> Fetch the complete documentation index at: https://docs.odella.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Slice Block

> Extract a portion of an array based on specified start index and count

<Frame>
  <img src="https://mintcdn.com/odella/PGZ7enNCqh0mvwj_/block-reference/assets/slice_light.png?fit=max&auto=format&n=PGZ7enNCqh0mvwj_&q=85&s=3ee8380a0e0b5c68ea14b0850e23c8cc" alt="Slice Block Screenshot" className="block dark:hidden" width="728" height="342" data-path="block-reference/assets/slice_light.png" />

  <img src="https://mintcdn.com/odella/PGZ7enNCqh0mvwj_/block-reference/assets/slice_dark.png?fit=max&auto=format&n=PGZ7enNCqh0mvwj_&q=85&s=6138012232370ab1eb237bd07981014b" alt="Slice Block Screenshot" className="hidden dark:block" width="702" height="344" data-path="block-reference/assets/slice_dark.png" />
</Frame>

## Overview

The Slice Block extracts a portion of an array. It takes an array as input and outputs a new array that starts at a specified index and contains a specified number of elements. This block is useful for manipulating arrays, such as extracting a subset of data from a larger dataset.

## Key Features

* Extract a subset of elements from an array
* Configurable start index and count
* Option to provide start and count values via input ports
* Handles empty/undefined inputs gracefully

## Inputs

<ParamField path="input" type="any[]" required>
  The array to be sliced.
</ParamField>

<ParamField path="start" type="number">
  The index at which to start the slice. Only available when "Use Start Input" is enabled.
</ParamField>

<ParamField path="count" type="number">
  The number of elements to include in the slice. Only available when "Use Count Input" is enabled.
</ParamField>

## Outputs

<ResponseField name="output" type="any[]">
  The sliced array containing the extracted elements from the input array.
</ResponseField>

## Editor Settings

<ParamField path="start" type="number" default={0}>
  The index at which to start the slice. If not provided, defaults to 0.
</ParamField>

<ParamField path="count" type="number">
  The number of elements to include in the slice. If not provided, includes all elements from start to end.
</ParamField>

<ParamField path="useStartInput" type="boolean" default={false}>
  When enabled, allows the start index to be provided via an input port instead of being set in the settings.
</ParamField>

<ParamField path="useCountInput" type="boolean" default={false}>
  When enabled, allows the count to be provided via an input port instead of being set in the settings.
</ParamField>

## Example: Slice an array

1. Create an Array Block with values `[1, 2, 3, 4, 5]`.
2. Add a Slice Block and set the `Start` to `2` and the `Count` to `2`.
3. Connect the Array Block to the Slice Block's `input`.
4. Run the flow. The Slice Block's `output` should be `[3, 4]`.

## Error Handling

* The block will error if the `input` is not provided or is not an array
* If start or count inputs are enabled but not connected, the block will use the default values
* Using a negative count will result in an error

## FAQ

<AccordionGroup>
  <Accordion title="What happens if the Start is greater than the length of the array?">
    The Slice Block will return an empty array.
  </Accordion>

  <Accordion title="What happens if the Count is greater than the number of elements in the array?">
    The Slice Block will return all elements from the Start to the end of the array.
  </Accordion>

  <Accordion title="Can I use negative numbers for the Start and Count?">
    You can use negative numbers for the Start to count from the end of the array. However, using a negative number for the Count will result in an error.
  </Accordion>
</AccordionGroup>

## See Also

* [Array Block](/block-reference/data/array)
* [Extract Object Path Block](/block-reference/modifiers/extract-object-path)
* [Code Block](/block-reference/advanced/code)
* [Split Text Block](/block-reference/modifiers/chunk)
* [Join Block](/block-reference/modifiers/join)