MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual

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The CFScript language 129
Using CFScript
<cfscript>
if (IsDefined("Form.submit")) {
if ((Form.lastname NEQ "") AND (Form.department NEQ "")) {
employee=StructNew();
employee.firstname=Form.firstname;
employee.lastname=Form.lastname;
employee.email=Form.email;
employee.phone=Form.phone;
employee.department=Form.department;
WriteOutput("Adding #Form.firstname# #Form.lastname# <br>");
}
else
WriteOutput("You must enter a Last Name and Department.<br>");
}
</cfscript>
The CFScript language
This section explains the syntax of the CFScript language.
Identifying CFScript
You enclose CFScript regions inside
< cfscript >
and
</cfscript>
tags. No other CFML tags
are allowed inside a
cfscript
region. The following lines show a minimal script:
<cfscript>
a = 2;
</cfscript>
Variables
CFScript variables can be of any ColdFusion type, such as numbers, strings, arrays, queries, and
objects. The CFScript code can read and write any variables that are available in the page that
contains the script. This includes all common scope variables, such as session, application, and
server variables.
Expressions and operators
CFScript supports all CFML expressions. CFML expressions include operators (such as +, -, EQ,
and so on), as well as all CFML functions. As in all ColdFusion expressions, you must use CFML
operators, such as LT, GT, and EQ. You cannot use JavaScript operators, such as <, >, ==, or ++.
For information about CFML expressions, operators, and functions, see Chapter 4, “Using
Expressions and Pound Signs,” on page 83 .
Statements
CFScript supports the following statements:
assignment for-in try-catch
function call while function (function definition)
if-else do-while var (in custom functions only)