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ABL Reference
Class Properties and Methods Reference
:
IsNull( ) method (JsonObject)
IsNull( ) method (JsonObject)
Returns a LOGICAL indicating if a property in a JsonObject contains the null value.
Return type:
LOGICAL
Access:
PUBLIC
Applies to:
Progress.Json.ObjectModel.JsonObject class
Syntax
IsNull(INPUT
property-name
AS CHARACTER )
property-name
A CHARACTER expression naming the property to be tested.
A JsonError is raised if:
property-name
is the empty string (""), or is the Unknown value (
?
)
The property does not exist
property-name is the empty string (""), or is the Unknown value (?)
The property does not exist