Reading from an object javascript

Question

Have a look

console.log(docs);
console.log(docs.key);
console.log(docs.user);
// outputs:
[ { key: 'HunueVwerwbZwesZHxntesDciakecyiJ',
user: '[email protected]',
createdAt: Mon Mar 17 2014 08:48:30 GMT-0400 (EDT),
_id: 5326ef1ee883062522faa4a8,
__v: 0 } ]
undefined
undefined

What's wrong with the way I am trying to access this object?

You've wrapped it as an array. docs[0].key would work.

fzzle
– fzzle

2014-03-17 12:58:46 +00:00
Commented Mar 17, 2014 at 12:58 — fzzle
– fzzle, Commented Mar 17, 2014 at 12:58
That's an array, the object is the [0] element.

Ram
– Ram

2014-03-17 12:59:08 +00:00
Commented Mar 17, 2014 at 12:59 — Ram
– Ram, Commented Mar 17, 2014 at 12:59

thefourtheye · Accepted Answer · 2014-03-17 12:58:42Z

3

docs is an Array. You can check that like this

console.log(Array.isArray(docs));
// true

So, you can check the length of the array, like this

console.log(docs.length);
// 1

Since it has only one element, we can access the first element with the subscript notation, like this

console.log(docs[0].key);
console.log(docs[0].user);

Note: We access the first element with 0, because JavaScript Arrays start with index 0.

Instead you can drop the object and retain only the array, like this

docs = docs[0];

answered Mar 17, 2014 at 12:58

thefourtheye

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