Not able to get value from Json key - json

Question

I am trying to get an object from Mongoose but when I get it and try to access the Json object by key to get the value i get undefined.
User.find({name: 'auth'},function (err,obj) {
var authCode = JSON.stringify(obj);
console.log(authCode);
var parse = JSON.parse(authCode);
console.log(parse);
console.log(parse.code);
});
I get the following output:
[{"_id":"5a43b491734d1d45eaf2d00d","name":"auth","code":"nCAxOSrUMqxtxd8T"}]
[ { _id: '5a43b491734d1d45eaf2d00d',
name: 'auth',
code: 'nCAxOSrUMqxtxd8T' } ]
undefined
I have even tried console.log(parse['code'])and i still get undefined. Can someone please help me

Answer 1

parse variable above is not a dictionary itself, but an array containing a dictionary. What you should do to access the code field would be first access the dictionary and then get the code field like;
parse[0].code
or
parse[0]['code']

Answer 2

You need not parse or stringify the returned JSON object. You can use the JSON object as it is. Try below approach
User.find({name: 'auth'},function (err,obj) {
console.log(obj);
console.log(obj.code);// this will probably be undefined as find method returns array of objects ( correct me if iam wrong)
user.forEach(function(obj,index){
console.log("index: "+index);
console.log("obj: "+obj.code);
});
});
Using promises is a good way
User.find({name: 'auth'})
.then((user)=>{
console.log("find success");
console.log(user);
console.log(user.code); // would return undefined as User.find will return array of objects
user.forEach(function(obj,index){
console.log("index: "+index);
console.log("obj: "+obj.code);
});
})
.catch(()=> {
console.log("find failed");
});