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Chapter 2: ColdFusion Functions
DeleteClientVariable
Deletes the client variable specified by name. Returns a Boolean TRUE when variable
is successfully deleted, even if variable did not previously exist. To test for the existence
of a variable, use IsDefined.
See also GetClientVariablesList.
Syntax
DeleteClientVariable(" name ")
name
Name of a client variable to be deleted, surrounded by double quotes.
Usage
If the client variable specified by name does not exist, an error is returned.
Example
<!--- This view-only example shows DeleteClientVariable --->
<HTML>
<HEAD>
<TITLE>DeleteClientVariable Example</TITLE>
</HEAD>
<BODY>
<!--- this example is view only --->
<H3>DeleteClientVariable Example</H3>
<P>This view-only example deletes a client variable called
"User_ID", if it exists in the list of client variables
returned by GetClientVariablesList().
<P>This example requires the existance of an Application.cfm file
and that client management be in effect.
<!---
<CFSET client.somevar="">
<CFSET client.user_id="">
<P>Client variable list:<CFOUTPUT>#GetClientVariablesList()#</CFOUTPUT>
<CFIF ListFindNoCase(GetClientVariablesList(), "User_ID") is not 0>
<!--- delete that variable
<CFSET temp = DeleteClientVariable("User_ID")>
<P>Was variable "User_ID" Deleted? <CFOUTPUT>#temp#</CFOUTPUT>
</CFIF>
<P>Amended Client variable list:<CFOUTPUT>#GetClientVariablesList()#
</CFOUTPUT>
--->
</BODY>
</HTML>
339
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