Application
|
Yes
|
For multiple clients in one application
over multiple browser sessions. Surround code that uses application
variables in cflock blocks.
|
Specifying the prefix Application when you
create the variable.
|
Arguments
|
No
|
Within the body of a user-defined function
or ColdFusion component method.
|
The calling page passing an argument in
the function call.
|
Attributes
|
Yes
|
On a custom tag page, or inside a thread
|
For custom tags, the calling page passing
the values to a custom tag page in the custom tag’s attributes.
For
threads, the cfthread tag specifying attribute
values.
|
Caller
|
On the custom tag page, Yes.
On the
calling page, No (Variables prefix is optional).
|
On the custom tag page, by using the Caller scope
prefix.
On the page that calls the custom tag, as local variables
(Variables scope).
|
On the custom tag page, by specifying the
prefix Caller when you create the variable.
On the calling
page, by specifying the prefix Variables, or using no prefix, when
you create the variable.
|
Cffile
|
Yes
|
Following an invocation of cffile.
|
A cffile tag.
|
CGI
|
No
|
On any page. Values are specific to the
latest browser request.
|
The web server. Contains the server environment
variables that result from the browser request.
|
Client
|
No
|
For one client in one application, over
multiple browser sessions.
|
Specifying the prefix Client when you create
the variable.
|
Cookie
|
No
|
For one client in one or more applications
and pages, over multiple browser sessions.
|
A cfcookie tag. You can also set memory-only cookies
by specifying the prefix Cookie when you create the variable.
|
Flash
|
Yes
|
A ColdFusion page or ColdFusion component called
by a Flash client.
|
The ColdFusion Client access. You assign
a value to Flash.You can assign values to the Flash.result and Flash.pagesize
variables.
|
Form
|
No
|
On the action page of a form and in custom
tags called by the action page; cannot be used on a form page that
is not also the action page.
|
A form or cfform tag. Contains the values of form
field tags (such as input) in the form body when the form is submitted.
The variable name is the name of the form field.
|
Local
|
No
|
Within the body of a user-defined function
or ColdFusion component method, only while the function executes.
|
Either of the following: In the
function or method definition, a var keyword in
a cfset tag or a CFScript var statement.
Specifying the Local keyword when you create a variable in
the function or method.
|
Request
|
Yes
|
On the creating page and in any pages run
during the current HTTP request after the variable is created, including
in custom tags and nested custom tags.
|
Specifying the prefix Request when you create the
variable.
|
Server
|
Yes
|
To any page on the ColdFusion server. Surround all
code that uses server variables in cflock blocks.
|
Specifying the prefix Server when you create
the variable.
|
Session
|
Yes
|
For one client in one application and one browser
session. Surround code that uses Session scope variables in cflock blocks.
|
Specifying the prefix Session when you create the
variable.
|
This
|
Yes
|
Within a ColdFusion component or the body
of a user-defined function that was created using the cffunction tag and place in an object,
structure, or scope. In the containing page, through the component
instance or containing object.
|
Within the component or function by specifying the
prefix This when you create the variable.
In the containing
page, by specifying the component instance or object that contains
the function as a prefix when you create the variable.
|
ThisTag
|
Yes
|
On the custom tag page.
|
Specifying the prefix ThisTag when you create the
variable in the tag or using the cfassociate tag in a nested custom
tag.
|
Thread
|
The thread name.
Inside the thread that
creates the variable, you can also use the keyword thread.
|
Any code in the request.
|
Using the keyword thread or
the thread name as a prefix when you create the variable.
You
can create Thread variables only inside the thread.
|
thread-local (no prefix)
|
none
|
Within a thread created by the cfthread tag
|
Using no prefix when you create the variable. You
can also use the keyword var before the variable name.
|
URL
|
No
|
On the target page of the URL.
|
The system. Contains the parameters passed
in the URL query string used to access the page.
|
Variables
(Local)
|
No
|
On the current page. Cannot be accessed
by a form’s action page (unless the form page is also the action
page). Variables in this scope used on a page that calls a custom
tag can be accessed in the custom tag by using its Caller scope;
however, they are not available to any nested custom tags.
|
Specifying the prefix Variables, or using
no prefix, when you create the variable. (To create a Variables
scope variable inside a ColdFusion thread, you must use the Variables
prefix.)
|
