Determine whether a given value or variable reference is null.
IsNull(object=[any])
| Argument | Type | Required | Description | Default |
|---|---|---|---|---|
object |
any |
true |
Value to test for null. |
- ArrayIsEmpty
- Attempt
- IsArray
- IsBinary
- IsBoolean
- IsClosure
- IsCustomFunction
- IsDate
- IsDateObject
- IsDebugMode
- IsDefined
- IsEmpty
- IsFileObject
- IsIPv6
- IsJSON
- IsLeapYear
- IsLocalHost
- IsNumeric
- IsNumericDate
- IsObject
- IsQuery
- IsSimpleValue
- IsStruct
- IsValid
- IsXML
- IsXmlAttribute
- IsXMLDoc
- IsXMLElem
- IsXMLNode
- IsXMLRoot
- LSIsNumeric
- structIsEmpty