Convert string to JSON object in Javascript -

i have string in format:

var abc = "{'abc':'25117', 'data':'india\"newdelhi\"'}"

i want convert json object.

i've tried use "" , '' interchanging them.

i've used function json.parse(abc), works if string

var abc = '{"abc":"25117", "data":"india\'newdelhi\'"}'

but want "newdelhi" should in double quotes i.e. "" , strict condition.

stick valid json, , double escape quotes

var abc = '{"abc":"25117", "data":"india\\"newdelhi\\""}';

O9