Nested objects in Json - json

Question

I am a newbie in Json objects and Json array. I want to access a nested object in Json object , but I am making a slight error ,I have wasted my 2 hr searching also reading lots of stackoverflow's questions on it but I can't find where i am making an error. Please help me out
Response
{ __v: 0,
friends_in:
[ { friends_in_email: '12',
friends_in_gcm_regId: '12'
} ]
}
My code
console.log(JSON.stringify(doc));
Output:
{
"__v": " 0",
"friends_in": [
{
"friends_in_email": "12",
"friends_in_gcm_regId": "12"
}
]
}
Here is error generating saying undefined
MyCode
console.log(JSON.stringify(doc[0].__v));
console.log(JSON.stringify(doc[0].friends_in));
Output
0 //Correct
undefined //Why ?

Answer 1

There are some errors in your stringified JSON (maybe some mistakes in pasting?). But using the below JSON, everything works as expected.
var rawString = '{ "__v":" 0", "friends_in": [{ "friends_in_email": "12", "friends_in_gcm_regId": "12"}] }';
var x = JSON.parse(rawString);
console.log(JSON.stringify(x.__v));
console.log(JSON.stringify(x.friends_in));
The above results in the following output:
0
[{"friends_in_email":"12","friends_in_gcm_regId":"12"}]
You seem to be mixing up JSON object (things in curly braces { ... }) and JSON arrays (things in square brackets [ ... ]). Only JSON arrays should be indexed like you have:
var y = [22, 24, 28];
y[0] // do something with it ...
Objects should have their members accessed by name:
var z = { test: 22, another_number: 24 };
z.test // do something with it ...