# IsNull()

Determines whether given object is null or not

```
IsNull( object=any );
```

**Returns:** boolean

# Arguments

| Argument | Type | Required | Description | Default |
|----------|------|----------|-------------|---------|
| object | any | Yes | Object for which you perform the null check. |  |

# Examples

```cfml
v1="test";
writeDump(isnull(v1));//false
v2;//Defining empty variable or v2=nullValue();
writeDump(isnull(v2));//true
```







# Categories

[Decision logic](../../categories/decision.md)

# See Also

[IsDefined()](isdefined.md), [NullValue()](nullvalue.md), [StructKeyExists()](structkeyexists.md), [Null Support](../../recipes/null-support.md)