MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual

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132 Chapter 6: Extending ColdFusion Pages with CFML Scripting
Using CFScript statements
The following sections describe how to use these CFScript statements:
•
Assignment statements and functions
•
Conditional processing statements
•
Looping statements
Using assignment statements and functions
CFScript assignment statements are the equivalent of the
cfset
tag. These statements have the
following form:
lval = expression;
lval is any ColdFusion variable reference; for example:
x = "positive";
y = x;
a[3]=5;
structure.member=10;
ArrayCopy=myArray;
You can use ColdFusion function calls, including UDFs, directly in CFScript. For example, the
following line is a valid CFScript statement:
StructInsert(employee,"lastname",FORM.lastname);
Using conditional processing statements
CFScript includes the following conditional processing statements:
•
if
and
else
statements, which serve the same purpose as the
cfif
,
cfelseif
, and
cfelse
tags
•
switch
,
case
, and
default
statements, which are the equivalents of the
cfswitch
,
cfcase
,
and
cfdefaultcase
tags
Indexed
cfloop for
loops
Conditional
cfloop while
loops and
do while
loops
Structure
cfloop for in
loop. (There is no equivalent for queries, lists, or objects.)
cfbreak break statement. CFScript also has a continue statement that has no
equivalent CFML tag.
cftry , cfcatch try and catch statements
cfcookie Direct assignment of Cookie scope memory-only variables. You cannot
use direct assignment to set persistent cookies that are stored on the
user’s system.
cfobject CreateObject function
Tag CFScript equivalent