
Contents > CFML Reference > ColdFusion Java CFX Reference > Request interface > attributeExists

attributeExists

Checks whether the attribute was passed to this tag.

Returns True if the attribute is available; otherwise returns False.

Request interface

public boolean attributeExists(String name)

getAttribute, getAttributeList

Parameter	Description
name	Name of the attribute to check (case-insensitive)

The following example checks whether the user passed an attribute named DESTINATION to the tag; if not, it throws an exception:

if ( ! request.attributeExists("DESTINATION") )
{
   throw new Exception( 
   "Missing DESTINATION parameter",
   "You must pass a DESTINATION parameter in "
   "order for this tag to work correctly." ) ;
} ;


Contents > CFML Reference > ColdFusion Java CFX Reference > Request interface > attributeExists

Version 6.1

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