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VBScript IsNumeric Function
Complete VBScript Reference
The IsNumeric function returns a Boolean value that indicates whether a specified expression can be evaluated as a number. It returns True if the expression is recognized as a number; otherwise, it returns False.
Note: If expression is a date the IsNumeric function will return False.
Syntax
| Parameter | Description |
|---|---|
| expression | Required. An expression |
Example
Example
Dim x
x=10
document.write(IsNumeric(x) & "<br />")
x=Empty
document.write(IsNumeric(x) & "<br />")
x=Null
document.write(IsNumeric(x) & "<br />")
x="10"
document.write(IsNumeric(x) & "<br />")
x="911 Help"
document.write(IsNumeric(x))
</script>
The output of the code above will be:
True
False
True
False
Try it yourself »
Complete VBScript Reference
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