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The IsEmpty Function

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)

Example 1

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

Output:

True
False
True
False

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