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I have a function that returns a JSON string, and ColdFusion 10 returns a slightly different value than ColdFusion 8.

In CF10, I get 

{"ZIPCODE":90210,"PHONE":"(555) 382-6630","LAT":83,"DISTANCE":74,"NAME":"Pueblo, CO","ADDRESS":"6830 Meddley Drive","LONG":104}

but in CF8, I get this

{\"DISTANCE\":74,\"LAT\":83,\"ZIPCODE\":90210,\"NAME\":\"Pueblo, CO\",\"PHONE\":\"(555) 382-6630\",\"ADDRESS\":\"6830 Medley Drive\",\"LONG\":104.}

For the function, I have returnformat set to JSON and use serializeJSON() for the return value. I'm calling the function via jQuery's $.ajax method with dataType set to JSON

The backslashes from CF8 are causing errors in the javascript used to parse the data. Why is this happening, and is there a workaround?

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    The CFC will automatically return it in JSON format, so calling serializeJSON() JSON-ifies the JSON. Which effectively escapes all the special characters with backslashes. Try it without calling serializeJSON().
    – imthepitts
    Commented Sep 23, 2013 at 22:43
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    @imthepitts - (Edit) Yep, no need to use both. (You could even omit both and just use the url parameter ?returnformat=json to specify you want the result in json format). Anyway, you should write that up as an answer, btw.
    – Leigh
    Commented Sep 23, 2013 at 23:23
  • I wonder why this isn't a problem with CF10 ...
    – RHPT
    Commented Sep 24, 2013 at 1:58
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    Well if it does not "double-serialize" (as the code is instructing CF to do) then they obviously added some logic as a protection measure. CF must detect whether the result is already serialized, and if so it returns the result "as-is".
    – Leigh
    Commented Sep 24, 2013 at 2:26

1 Answer 1

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my guess would cf10 is automatically returning it in json format and cf8 isn't

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    No, based on the results CF10 is smart enough to recognize the code is unintentionally serializing the result twice (ie using both serializeJSON() and returnformat="json") so it must ignore one of them. CF8 does not have that feature, so it serializes the result twice.
    – Leigh
    Commented Oct 1, 2013 at 23:00

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