VBScript IsNumericFunction

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The IsNumeric function returns a Boolean value indicating whether the specified expression can be evaluated as a number. It returns True if the expression can be evaluated as a number; otherwise, it returns False.

Note:If the expression is a date, the IsNumeric function returns False.

Syntax

IsNumeric(expression)

Parameter Description
expression Required. An expression.

Example

Example

<script type="text/vbscript">

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 above example is:

True
True
False
True
False

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