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CFPARAM

CFPARAM is used to test for a parameter's existence, and optionally test its data type, and provide a default value if one is not assigned.

Syntax

<CFPARAM NAME="param_name"
    TYPE="data_type">
    DEFAULT="value">

NAME

The name of the parameter you are testing (such as "Client.Email" or "Cookie.BackgroundColor"). If you omit the DEFAULT attribute, an error occurs if the specified parameter does not exist.

TYPE

Optional. The type of parameter that is required. The default value is "any."

Type Values
Type Value	Description
any	any value.
array	any array value.
binary	a binary value.
boolean	a Boolean value.
date	a date-time value.
numeric	a numeric value.
query	a query object.
string	a string value or a single character.
struct	a structure. ...