Access property of a javascript object

Question

I will please need another pair of eyes on this. I am getting historical data from cryptocompare API and can't access the values I receive.

When I hardcode it, something like res.data.OMG.USD, I am able to get the result.

These is the exact format it comes in. I tried parsing it into a string and pushing the results into an array but haven't been able to access the prices, when I did Object.key, it returned only the name and not the USD or EUR values. What am I missing here?

UPDATE:here is the request, I am trying to access the USD values.

 $http.get(
        'data/pricehistorical?fsym=BTC&tsyms=USD,EUR'
          ).then(
            function(res) {
           //sample response
          /*

          {"OMG":{"USD":8.19,"EUR":6.65}}
          {"BTC":{"USD":10226.86,"EUR":8153.29}}
          */
     },

  function(res) {
        console.log(res);
      }
    );

Yes, I get this error. ```SyntaxError: Unexpected token o in JSON at position 1``` — Bernard 'Beta Berlin' Parah, May 11 '18 at 01:49
Your object only has one key so `Object.keys()` will only give that to you. That key points to another object with its own keys. It would be helpful if you showed a little more detail about what you're trying to do and what you are starting with (i.e do you have an array of these objects?) — Mark, May 11 '18 at 01:49
p.s. your get that `JSON.parse()` error when it's already a javascript object. It doesn't need to be parsed, — Mark, May 11 '18 at 01:51
Possible duplicate of [How to parse JSON data with jQuery / JavaScript?](https://stackoverflow.com/questions/8951810/how-to-parse-json-data-with-jquery-javascript) — Shadow, May 11 '18 at 01:56
@Shadow I have seen that question, non of the answers worked for me. — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:00
In that case, I'm not sure what your question is... Try adding a [mcve] so we can see what you mean. — Shadow, May 11 '18 at 02:02
Does your `res` have both those values (i.e. an array) or do you just get one of them? — Mark, May 11 '18 at 02:06
https://min-api.cryptocompare.com/data/pricehistorical?fsym=ETH&tsyms=BTC,USD,EUR&ts=1452680400 @Mark_M it's one, an example is on this link — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:10
IMHO if you provide exactly value sending to you by server then this value is not a well-formed JSON. Indeed in this case JSON.parse fails with error. — Vasyl Moskalov, May 11 '18 at 02:11
You can just look at the `Object.values()` in that case: `let quote = Object.values(res)[0];` then your value you will be in `quote.USD` You need the `[0]` because an object potentially has more than one value, but in your case it doesn't. — Mark, May 11 '18 at 02:12
Your sample response is not any kind of valid format usable by JavaScript. Using the link you provided above gives `{"BTC":{"USD":9093.86,"EUR":7598.64}}` which is valid. What is `$http`? Does it automatically parse JSON responses into JavaScript objects? — Phil, May 11 '18 at 02:15
@Mark_M it worked! I now have access to the values. Thanks everyone. — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:18
@Phil I copied the response directly from the console, `$http` because I am using angularjs — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:20
Which _"console"_ did you copy that from? The only one I'd be looking at is the _Network_ console in the _Response_ tab. — Phil, May 11 '18 at 02:25
Yep, I copied it from the network console. I have updated the question with a screenshot from the Network>Response tab — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:36
So you can see that it looks nothing like what you originally had. All you should need is `res.data.OMG.USD`, `res.data.OMG.EUR`, etc. What exactly is you question now? — Phil, May 11 '18 at 02:37
"When I hardcode it, something like `res.data.OMG.USD`, I am able to get the result." and it's the same thing as what I pasted in the response portion of the code snippet . — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:42
I could have framed the in a more concise manner, thanks for the help — Bernard 'Beta Berlin' Parah, May 11 '18 at 02:43

Reputated_Enginius · Answer 1 · 2018-05-11T14:14:54.453

0

First of all try to understand what JSON format is.

Supposing that you have already studied it then writing pure Javascript code:

var testObject = {"OMG": {"USD": 15.85, "EUR": 12.62}};

//Then you can access USD by

console.log(testObject.OMG.USD);

edited May 11 '18 at 14:14

answered May 11 '18 at 08:20

Reputated_Enginius

336
3
22

As you can see in the question, I stated that I was able to access it that way, please follow the comments to see how we arrived at an answer that worked for me. – Bernard 'Beta Berlin' Parah May 11 '18 at 13:29

Access property of a javascript object

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