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 Unkown value (?)

The property does not exist