The double-quotation marks ("), single-quotation mark ('), and number sign (#) characters have special meaning to ColdFusion. To include any of them in a string, double the character; for example, use ## to represent a single # character.
The need to escape the single- and double-quotation marks is context sensitive. Inside a double-quoted string, you do not need to escape single-quotation mark (apostrophe) characters. Inside a single-quoted string, you do not escape double-quotation mark characters.
The following example illustrates escaping special characters, including the use of mixed single- and double-quotation marks:
<cfset mystring = "We all said ""Happy birthday to you."""> <cfset mystring2 = 'Then we said "How old are you now?"'> <cfoutput> #mystring#<br> #mystring2#<br> Here is a number sign: ## </cfoutput>
The output looks as follows:
We all said "Happy birthday to you." Then we said "How old are you now?" Here is a number sign: #