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POjavascript regex replace all doublequotes in string unless the doublequote is followed by space or comma space
 

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  1. POjavascript regex replace all doublequotes in string unless the doublequote is followed by space or comma space
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    <p>I have an issue where someone isn't properly escaping double quotes in values later to be interpreted as a JSON string. </p> <p>String example:</p> <pre><code>{"description":"This is my 12" pizza I ordered.","value":"1"} </code></pre> <p>When I try to have JSON.parse() handle this it gives an error because of the unescaped double quote (refering to the size in inches) </p> <p>At first, I thought - just do:</p> <pre><code>string.replace(/\"/g,'\"'); </code></pre> <p>but of course this escapes all the valid double-quotes too. So, I'm not an expert on regex, but I looked around for some answers and I think this requires a negative-lookahead?</p> <p>Can someone help construct a regex for finding (for replacement) any sequence of doublequote where the next 2-character sequence following the offending doubleqoute is NOT space-comma? </p> <p>I know this isn't a total universal fix, (getting the person to fix on their end would be), but unfortunately I don't have the luxury of a universal fix.</p> <p>TIA</p> <p>Update - instead of considering the example string (used for illustration only). Is it possible to test for the presence of valid JSON before and after each doublequote - ie to look for any of the following characters ,{[: </p> <p>before and after each doublequote? I guess this is what I was asking - can this be done with lookahead / behind regex?</p>
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    1. USRoss
    1. USRoss
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    1. COThis would be better done at creation time; how are you creating your _JSON_?
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      1. USPaul S.
    2. COwhen you turn your "thing" into a json object using JSON.stringify, it should do the auto-escaping for you. You shouldn't need to do this yourself; can you show how you're building the object that you're turning into JSON in the first place?
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      1. USMike 'Pomax' Kamermans
    3. COThe regex you're asking for won't solve your problem, because the double quotes in front of the words 'description', 'this', and 'value' shouldn't be escaped, but aren't immediately followed by comma or space characters.
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      1. USgatkin
 

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