isNull - logical function

isNull

Overview

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

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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