User Guide

Table Of Contents

82 Chapter 4: Using Expressions and Number Signs

Note: You do not need to use number signs when you use the cfset tag to assign one variable’s value

to another value. For example, the following tag assigns the value of the

oldVar variable to the new

variable,

newVar: <cfset newVar = oldVar>.

Using number signs in tag bodies

You can put variables or functions freely inside the bodies of the following tags by enclosing each

variable or expression with number signs:

• cfoutput

• cfquery

• cfmail

For example:

Value is #Form.MyTextField#

</cfoutput>

The name is #FirstName# #LastName#.

</cfoutput>

The value of Cos(0) is #Cos(0)#

</cfoutput>

If you omit the number signs, the text, rather than the value, appears in the output generated by

the

cfoutput statement.

Two expressions inside number signs can be adjacent to one another, as in the following example:

"Mo" and "nk" is #Left("Moon", 2)##Mid("Monkey", 3, 2)#

</cfoutput>

This code displays the following text:

"Mo" and "nk" is Monk

ColdFusion does not interpret the double number sign as an escaped # character.

Using number signs in strings

You can put variables or functions freely inside strings by enclosing each variable or expression

with number signs; for example:

ColdFusion automatically replaces the text with the value of the variable or the value returned by

the function. For example, the following pairs of

cfset statements produce the same result: