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VBScript IsDate Function

VBScript Reference Complete VBScript Reference

The IsDate function returns a Boolean value that indicates if the evaluated expression can be converted to a date. It returns True if the expression is a date or can be converted to a date; otherwise, it returns False.

Note: The IsDate function uses local setting to determine if a string can be converted to a date ("January" is not a month in all languages.)

Syntax

IsDate(expression)

Parameter Description
expression Required. The expression to be evaluated

Example 1

Legal dates:

<script type="text/vbscript">

document.write(IsDate("April 22, 1947"))
document.write("<br />")
document.write(IsDate(#01/31/10#))

</script>

The output of the code above will be:

True
True

Try it yourself »

Example 2

Illegal dates:

<script type="text/vbscript">

document.write(IsDate("#01/31/10#"))
document.write("<br />")
document.write(IsDate("52/17/2010"))
document.write("<br />")
document.write(IsDate("Hello World!"))

</script>

The output of the code above will be:

False
False
False

Try it yourself »

VBScript Reference Complete VBScript Reference
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