ParameterExists

Last update:

May 18, 2026

Warning:

This function is removed in ColdFusion (2025 release).

Description

This function is deprecated. Use the IsDefined function.Determines whether a parameter exists. ColdFusion does not evaluate the argument.

ColdFusion (2025 release): Removed the function.
ColdFusion (2018 release): Changed p arameter nameVariable nametoparameter .
ColdFusion MX: Deprecated this function. It might not work, and might cause an error, in later releases.

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