What is the ColdFusion equivelent to the backslash used to comment out a character in JavaScript

EG 'don't' is written 'don\'t' so the single quote mark between n and t doesn't get read as (end of string) and mess up the code.



I want to replace a double quote with x and I can't seem to do it. I think I may need to comment out the double quote.

<cfset FORM.field = '#replaceList(FORM.field, """, "x")#'>

or swapping the quote types round

<cfset FORM.field = "#replaceList(FORM.field, '"', 'x')#">

or using # to comment out

<cfset FORM.field = "#replaceList(FORM.field, '#"', 'x')#">

None of the above seem to work.

Do I have to use CF script?

There's got to be some way to do it?

First I don't think you are using the right function (according to cf docs):

ReplaceList(string, list1, list2)

You are not passing lists for the second and third parameter.

To escape a qutoes, enter two sets of quotes. This will do what you want :) :

<cfset field = replace(FORM.field, """", "x")>

Jon

Thanks John.


The function is correct. field,list of one,list of one

I understand ##

do you mean ""

works the same way ?


Don't bust a gut with this one as I've gone round it. However your answer is worth exploring (for me anyway).

why would "" comment out "

???

Yes...the way to insert a double quote within double quotes is a double double quote. Make sense? :D

This should explain:

"" within double quotes = "
'' within single quotes = '
## within # = #

That's just how it is in ColdFusion. :)

Jon

Yes...the way to insert a double quote within double quotes is a double double quote. Make sense? :D

This should explain:

"" within double quotes = "
'' within single quotes = '
## within # = #

So to have a " in double quotes, you would use: """"
(four double quotes).

That's just how it is in ColdFusion. :)

Jon

That's great john, I only knew about ##

are there any others apart from ' and "

Also while I've got a brainbox on the line how would I remove line breaks and paragraph breaks from a text string?

eg. when the string is from a textarea box and the visitor has included them even though it tells you not to in ten foot letters. :rolleyes:

The char(x) values for line breaks are chr(10) and chr(13) (/n and /r).

So you could use:

replace(string, char(10), "-")
replace(string, char(13), "-")

Usually line breaks have the value char(10)&chr(13), so you could use

replace(string, char(10)&chr(13), "--")

But the first method is more fullproof, as it'll get any stray chr(10)'s or chr(13)'s :).

The only three characters I can think of which you will need to be escaping characters are '," and #. I mean, what else do you surround text/code with?

Jon

I got an error. Any idea why?



An error occurred while evaluating the expression:


daString = "#replace(daString, char(10), "-")#"


Error near line 6, column 7.
--------------------------------------------------------------------------------

Error resolving parameter CHAR

daString = "#replace(daString, chr(10), "-")#"
daString = "#replace(daString, chr(13), "-")#"

I think this is right but I still have another break chr to get rid of.

Do you know what it might be?

While searching for a list of ascii charaters , their numbers and their purposes I found this ref to other OS.

[quote]Alternative Sets.
There have always been other 8-bit character sets (e.g. Mac, Unix, Windows, Web browsers, Latin-1, etc.) but it's true sucessor is going to be Unicode.[quote]

Does this mean that visitors to my pages using a Mac for instance might not have their line breaks removed/replaced?

Is their a way of using unicode in coldFusion?


Just for the heck of it, this code does what I want. I had to run the string through twice although I'm not sure why.

Just to be extra extra sure I ran it through three times then added an error catcher as well.

Bit of overkill there I guess but it seems to work.

<!--- replace list --->
<cfset daString = "#hog_script#">

<!--- 1. convert line breaks --->
<cfset daString = "#replace(daString, chr(10), "-")#">
<cfset daString = "#replace(daString, chr(13), "-")#">
<cfset daString = "#replace(daString, chr(14), "-")#">
<!--- 1a. needed to convert line breaks again --->
<cfset daString = "#replace(daString, chr(10), "-")#">
<cfset daString = "#replace(daString, chr(13), "-")#">
<cfset daString = "#replace(daString, chr(14), "-")#">
<!--- 1b. hit it with sledgehammer --->
<cfset daString = "#replace(daString, chr(10), "-")#">
<cfset daString = "#replace(daString, chr(13), "-")#">
<cfset daString = "#replace(daString, chr(14), "-")#">

<!--- 2. convert / " ' --->
<cfset daString = "#replaceList(daString, "',\,""", " ,-,-")#">

<!--- 3. remove bad words and other illegal characters :
this Deleted coz of extreme bad language.
--->


<!--- 4. double check and do error relocate --->
<cfif (daString contains "'") OR (daString contains "\") OR (daString contains """") OR (daString contains"char(10)") OR (daString contains"char(13)") OR (daString contains"char(14)")>
<cflocation url="error.cfm" addtoken="No">
</cfif>

<cfset hog_script = "#daString#">

Well I guessed you figured out your first question. Char should be chr. My fault. :)

As far as character sets go, it depends on how the data from the form field is being interpreted by the browser and sent to the server. I really have no experience with Macs.

Running it throught three times!? That should not be necessary. You may want to try using a different var name when replacing.

<cfset daString2 = replace(daString, chr(10), "-")>

Jon

P.S. You can save yourself some coding by removing the "# and #" from around your functions. They're not really needed :). Kinda like entering then exiting quotes in JavaScript:

var myString = ""+stringVariable+""

Just a suggestion. Also, when you start using more complicated functions, maybe even within other functions, they tend to get in your way and will cause errors (I've been there...:rolleyes: )

Yes I think you're right about 3 times but for some reason it does have to go through twice or breaks remain. I wish I knew why.

The # around functions.

I learnt from Ben Forta's books and that's the way he seems to do it. I've always thought it was a bit clumsy but assumed if I didn't have # the functions would be interpreted as a text string.

I will experiment but I think you are suggesting I take the " out too.

It would make things easier for sure.

Thanks for the help and the pointers Jon