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VBScript IsEmpty Function

VBScript Reference Complete VBScript Reference

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

Example

<script type="text/vbscript">

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))

</script>

The output of the code above will be:

True
False
True
False

Try it yourself »
VBScript Reference Complete VBScript Reference
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