How should a JSON string with quotes inside can be parsed with javascript

Question

var str = '{"Language":"en","Type":"General","Text":""Mela" means "apple" in Italian"}';

Now JSON.parse(str) throws this error

Uncaught SyntaxError: Unexpected token M in JSON at position 43

Now replacing quotes escapes whole string and parsed JSON is not usable anymore

str = str.replace(/\\([\s\S])|(")/g,"\\$1$2");

"{\"Language\":\"en\",\"Type\":\"General\",\"Text\":\"\"Mela\" means \"apple\" in Italian\"}"

Other solutions like below do not seem to be working in this scenario

How to escape a JSON string containing newline characters using JavaScript?

Hi Federico Sir, that can be done but there can be some function/solution for this in javascript that is not in my knowledge. — Vishvendra Singh, Jan 22 '18 at 08:22
You should not have to do that. Where do you get the string from? Fix the cause, not the symptoms. — str, Jan 22 '18 at 08:23
Hi chŝdk sir, It is received in ajax response fetched through php and mysql. This data I downloaded from hotelsPro it provides hotel details with api. — Vishvendra Singh, Jan 22 '18 at 09:41
@VishvendraSingh Do you get it in this format from "hotelsPro"? — cнŝdk, Jan 22 '18 at 12:56
@chŝdk sorry, this data is from roomxml and I converted it from xml to json. This is not hotelspro data. Its my fault, I mixed it all. Damn I should have changed quotes there only. Thanks chŝdk. — Vishvendra Singh, Jan 22 '18 at 13:53
Ah, Okay, so you can fix it all and escape the double quotes in XML, you are welcome. — cнŝdk, Jan 22 '18 at 14:06

score 0 · Answer 1 · answered Jan 22 '18 at 08:24

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You need to add a backslash before each double quote within your string as:

const str = '{"Language":"en","Type":"General","Text": "\\"Mela\\" means \\"apple\\" in Italian"}';

const obj = JSON.parse(str)
console.log(obj.Text)

answered Jan 22 '18 at 08:24

Hemerson Carlin

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score 0 · Answer 2 · answered Jan 22 '18 at 08:27

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In JSON you don't escape double quotes of the property name or the begging of the property value, just escape what's inside property value:

{\"Text\":\"\"Mela\" means ....

It should be like this:

{"Text":"\"Mela\" means ....

answered Jan 22 '18 at 08:27

Dabbas

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score 0 · Answer 3 · answered Jan 22 '18 at 08:44

This can be done with multiple replacements:

var str = '{"Language":"en","Type":"General","Text":""Mela" means "apple" in Italian"}';
str = str.replace(/"/,"'"); //Replace all " with '

str = str.replace(/{'/,'{"') //Restore " to start of JSON
str = str.replace(/','/,'","'); //Restore " around JSON , separators
str = str.replace(/':'/,'":"'); //Restore " around JSON : separators
str = str.replace(/'}/,'"}'); //Restore " to end of JSON
str = str.replace(/'/,'\"'); //All remaining ' must be inside of data, so replace with properly escaped \"

console.log(str);

EDIT: A problem with this solution is that is will also replace original ' characters with " inside the text.

How should a JSON string with quotes inside can be parsed with javascript

3 Answers3