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isNull

Overview

The isNull function takes an expression as an argument, and returns true if it is a null value. Otherwise, it returns false.   

Note: This function is not supported for form objects.

Return Type

  • BOOLEAN

Syntax

For all services except Zoho Creator,

<variable> = <expression>.isNull();

For all services,

<variable> = isNull(<expression>);

where,

ParameterData typeDescription
<variable>BOOLEANVariable which will contain the returned boolean value.
<expression>ANY DATA TYPEVariable which will hold the expression awaiting null validation.

Examples

 info isNull (""); //returns true
                 info isNull (null); //returns true
                 info " ".isNull(); //returns false

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