when i try to run your json in chrome console it says invalid however it is a valid json format.
{"jsonObject":{"message":"success","error":false,"data":{"name":"ramdev","gen":"male","dd":"10","mm":"10","yy":"1995","fathername":"patanjali "}}}
but there are some illegal unicode characters (
\u200b
) present in the json
refer
javascript - \u200b (Zero width space) characters in my JS code. [
^]
Clean format
var json = {"jsonObject":{"message":"success","error":false,"data":{"anme":"ramdev","gen":"male","dd":"10","mm":"10","yy":"1995","fathername":"patanjali "}}}
var fatharName = json.jsonObject.data.fathername;
console.log(fatharName);