The payload is not valid JSON

[Royal1]

r.setStringParameterNoEscape('comments', current.comments.getJournalEntry(1));

while sending the comments inthe above REST API form , i am geeting the below error 

Please let me know how to send the work notes or comment  in REST calls

error:

responsebody {"error":{"message":"Exception while reading request","detail":"The payload is not valid JSON."},"status":"failure"}

[Ankur Bawiskar · Accepted solution]

@Royal1 

use this and do this for all the values

function jsonEncode(str) {
	str = str.replace(/\n/g, "\\n").replace(/\r/g, "\\r");
	return str;
}

var comments = current.comments.getJournalEntry(1);

// use this to remove the timestamp and user details and just get the value/text part
var dateRE = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.*\n/;
comments = comments.replace(dateRE, '');	

r.setStringParameterNoEscape('comments', jsonEncode(comments));

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Royal1]

Thanks you Ankur