VBScript IsEmpty Function

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The IsEmpty function returns a Boolean value that indicates whether a specified variable has been initialized or not. It returns true if the variable is uninitialized; otherwise, it returns False.

Syntax

IsEmpty(expression)

Parameter	Description
expression	Required. An expression (most often a variable name)

Example

<%

Dim x
response.write(IsEmpty(x) & "<br />")
x=10
response.write(IsEmpty(x) & "<br />")
x=Empty
response.write(IsEmpty(x) & "<br />")
x=Null
response.write(IsEmpty(x))

%>

The output of the code above will be:

True
False
True
False

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