Undefined [ISUNDEFINED]

Checks whether the value of a given Property is Undefined.

Syntax

ISUNDEFINED (value)

Data Types of the Argument

True/False, Integer, Number, Length, Area, Volume, Angle, or String

Data Type of the Result

True/False

Example

Determine whether an element’s string-type “Model” property is undefined. ISUNDEFINED is a logical value.

Expression

ISUNDEFINED (Model)

Result

True for every element whose Model property is <Undefined>

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Is Undefined [ISUNDEFINED]
Checks whether the value of a given Property is Undefined. Syntax ISUNDEFINED (value) Data Types of the Argument True/False, Integer, ...