Writing Output
To output the contents or results of a
ColdFusion expression, you use the
<cfoutput> tag. cfoutput
is a paired tag, which means that it has both start and end tags.
cfoutput tells ColdFusion to parse any text found
between the tag pairs for variables and expressions that need to be
evaluated. We’ll use the cfoutput
tag in a variety of ways throughout the book; it is one of the most
commonly used CFML tags. For now, let’s focus on how
the cfoutput tag outputs simple variable values.
The following example creates a number of variables using
cfset tags and then outputs the values of the
variables within cfoutput tags:
<!--- Assign values to variables ---> <cfset x = 1> <cfset y = x+2> <cfset Name = "Rob"> <cfset z = Name> <cfset Authenticated = true> <cfset TheDate = DateFormat(Now( ),'mm/dd/yyyy')> <!--- Output the variable values ---> <h2>Writing Output</h2> <cfoutput> x = #x#<br> y = #y#<br> Name = #Name#<br> z = #z#<br> TheDate = #TheDate#<br> Authenticated = #Authenticated#<br> </cfoutput>
Executing this template causes the value assigned to each variable to
be output to the browser, as shown in Figure 2-3.
Note the use of pound signs (#) in this example.
ColdFusion uses pound signs to separate expressions from literal
text. When ColdFusion encounters an expression surrounded by pound
signs, it attempts to evaluate it.

Figure 2-3. Writing output using the cfoutput ...