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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>
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
False
True
False
Try it yourself »
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