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

# ISEMPTY

> The ISEMPTY function checks whether a component value is empty. It supports various YiDA scenarios such as Form validation and workflow design. This function takes one argument and returns a boolean value. The example shows how to check whether a date component is empty.

The **ISEMPTY** function checks whether a component value is empty text, an empty object, or an empty array. It returns true if the value is empty, and false otherwise.

## Supported Scenarios

The ISEMPTY function is supported in the following YiDA scenarios:

* Form (main form fields)
* Form (business association rules)
* Form (validation)
* Workflow design (validation rules)
* Workflow design (association actions)
* Integration and automation
* Workflow node
* Connector

## Syntax

```text theme={"theme":{"light":"github-light","dark":"github-dark"}}
ISEMPTY(value1)
```

## Attributes

| **Attribute** | **Required** | **Description**        |
| ------------- | ------------ | ---------------------- |
| value1        | Yes          | The value to evaluate. |

## Return Value

| **Return type** | **Description**                                                                                              |
| --------------- | ------------------------------------------------------------------------------------------------------------ |
| Boolean         | The result of the evaluation.<br />• **true**: The value is empty.<br />• **false**: The value is not empty. |

## Example

In the following example, the `ISEMPTY()` function checks whether a date component is empty.

## Behavior

If the submitted component value is empty, form submission is blocked.