> For the complete documentation index, see [llms.txt](https://docs.emobiq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emobiq.com/emobiq-client/006-actions-and-visual-logic/action-reference/react-native/list/includes.md).

# includes

## Description

Determines whether a list includes a certain value.

## Input / Parameter

| Name  | Description              | Input Type | Default | Options | Required |
| ----- | ------------------------ | ---------- | ------- | ------- | -------- |
| data  | The list to be searched. | List       | -       | -       | Yes      |
| value | The value to look for.   | Any        | -       | -       | Yes      |

## Output

N/A

## Example

In this example, we will check whether a value is included in a list and print the result in the console.

### Step

1. Drag a `button` component to the canvas and open the `Action` tab. Select the `press` event of the button and drag the `Log.write` function to the event flow.
2. Call the function `List.includes` inside the `Log.write` function.
3. Then call the function `Conversion.toList` inside the `data` parameter of the `List.includes` function. Enter the value to be checked for in the list in the `value` parameter.
4. Enter the values of the list to be passed in the `Conversion.toList` function.

   ![](https://399701567-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwmJ1RKjM2uNFaL6fO3Xu%2Fuploads%2Fgit-blob-dac4e6377dc3467c66dff24e6b5282e853e7bf52%2Fincludes-step-1.png?alt=media)

### Result

1. The console will print `true` if the value exists in the list and `false` if the value does not exist in the list.
2. In this example, the value printed will be `true`.

   ![](https://399701567-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwmJ1RKjM2uNFaL6fO3Xu%2Fuploads%2Fgit-blob-031837819b9068f65ebcda7bb9739c61f93c103a%2Fincludes-result-1.png?alt=media)

## Links

### Related Information

See also:

* Functions
  * [Conversion.toList](https://github.com/OrangeKloud/emobiq-documentation/blob/master/document/client/2-5-actions-and-visual-logic/action-reference/react-native/Conversion/toList/toList.md)


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