# Class: IsNull

This documentation is for OpenLayers v10.9.0. The latest is v.

## ol/format/filter/IsNull~IsNull

    import IsNull from 'ol/format/filter/IsNull.js';

Represents a `<PropertyIsNull>` comparison operator.

#### new IsNull(propertyName)

format/filter/IsNull.js, line 11

  Name | Type | Description
  --- | --- | ---
  `propertyName` | string | Name of the context property to compare.

### Extends

- Comparison