How to parse JSON in node js

Question

I have this JSON array, and what I want is to get the password field alone

var user = [ { _id: 5902086ecbc0dd11e4870fd9,
 password: '2ドルa08ドル$FIpkmFT1WDZggQYyBA4CVuop6pelbKBfUEJ1/KAVIV2Si9Ho1EYhi',
 email: '[email protected]',
 lastName: 'v',
 firstName: 'j',
 updatedDate: 2017年04月27日T15:04:14.483Z,
 createdDate: 2017年04月27日T15:04:14.483Z } ]

I tried to parse it using this code

var obj = JSON.parse(user);
console.log(user.password);

but still it is undefined.

• ibrahim mahrir: It doesn't need parsing. It's already an array. And since it's an array of objects you'll have to use it like this: user[ index ].password; (user[0].password; for the first object ...).
• Álvaro González: This is not JSON. There's nothing to parse!
• Álvaro González: Possible duplicate of What's the difference between Javascript Object and JSON object
• Heretic Monkey: Possible duplicate of Access / process (nested) objects, arrays or JSON
• JerVi: actually that is what I received from my db (I'm using moongose for that), and I dont know how will I get the password field. thanks for the response, it helps

Answer 1

User is already a list of objects, so you don't need to parse it. However, it is an array. So if you meant for it to be an array, you'd need to access the password by using this code:

console.log(user[0].password);

• ibrahim mahrir: user is already an array of objects not JSON. JSON is a string representation of objects.
• JerVi: yes it solved my problem. sorry for noob question question. Im newby for nodejs. thanks alot
• Peter LaBanca: I fixed my answer to clarify that change @ibrahimmahrir
• ibrahim mahrir: @PeterLaBanca a response after 4 years, 1 month and 6 days haha. Better late than never :-)

Answer 2

It's already an array there is nothing to parse. You can access your property via :

console.log(user[0].password);

You can't access your property with user.password because user variable is not object, it's an array, your object is stored at the zero index of your array.

Answer 3

You already have JSON object. hence, no need to parse it again.

DEMO

var user = [{ _id: "5902086ecbc0dd11e4870fd9",
 password: '2ドルa08ドル$FIpkmFT1WDZggQYyBA4CVuop6pelbKBfUEJ1/KAVIV2Si9Ho1EYhi',
 email: '[email protected]',
 lastName: 'v',
 firstName: 'j',
 updatedDate: "2017-04-27T15:04:14.483Z",
 createdDate: "2017-04-27T15:04:14.483Z" } ];
 
var password = user[0].password;
console.log(password);

Answer 4

The variable 'user' is not a JSON array. It's an array with a single Javascript object as its element. JSON.parse(arg) can only be used to parse a JSON string to a plain Javascript object. That being said, to access the javascript object within the array, you can do:

var userData = user[0];

To access the password within the variable, userData, you can do:

var password = userData.password;

Log the password to the console with:

console.log(password);

Answer 5

Try This:

var user = [ {_id:'5902086ecbc0dd11e4870fd9',password: '2ドルa08ドル$FIpkmFT1WDZggQYyBA4CVuop6pelbKBfUEJ1/KAVIV2Si9Ho1EYhi',email: '[email protected]',lastName: 'v',firstName: 'j',updatedDate: '2017-04-27T15:04:14.483Z',createdDate:' 2017年04月27日T15:04:14.483Z' } ];
var obj = user[0];
console.log(obj.password);