cfparam

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 <cfparam name = "param_name"          type = "data_type"          default = "value"> 

Description

Use this tag to test whether a parameter exists, to test its data type, and to assign a default value.

Attributes

name (Required)

Name of the parameter to test.

type (Optional)

Uses: any, array, binary, Boolean, date, numeric, query, string, struct, UUID, and variableName.

default (Optional)

Value to set parameter to if it does not exist.