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Special characters
Last update:
May 18, 2026
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: #
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