> 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/cordova/validation/isnull.md).

# isNull

## Description

Validates a value if it is null

## Input / Parameter

| Name  | Description            | Input Type | Default | Options | Required |
| ----- | ---------------------- | ---------- | ------- | ------- | -------- |
| value | the value to validate. | Any        | -       | -       | Yes      |

## Output

| Description                   | Output Type |
| ----------------------------- | ----------- |
| Returns the validation value. | Boolean     |

## Example

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

### Step

1. Drag a `button` component into the canvas and open the `Action` tab. Select the `press` event of the button and drag the `console` function to the event flow.
2. Call the function `isNull` inside the `console` function.
3. Enter the value to be validated. In this example, we will enter the value "12".

   ![](/files/R3p5HnrGDCW2IcvuGetH)

### Result

1. The console will print `false` since it's not a null value.

   ![](/files/R9fTinEJ1jsOiYAdc59Y)