Getting JSON values in Node JS

Question

I am getting a JSON response from TMDB:

{
  "id": 283350,
  "results": [
    {
      "iso_3166_1": "BR",
      "release_dates": [
        {
          "certification": "12",
          "iso_639_1": "pt",
          "note": "Streaming",
          "release_date": "2017-10-25T00:00:00.000Z",
          "type": 4
        }
      ]
    },
    {
      "iso_3166_1": "GB",
      "release_dates": [
        {
          "certification": "12",
          "iso_639_1": "en",
          "release_date": "2015-12-24T00:00:00.000Z",
          "type": 4
        }
      ]
    },
    {
      "iso_3166_1": "SG",
      "release_dates": [
        {
          "certification": "",
          "iso_639_1": "",
          "note": "",
          "release_date": "2015-12-17T00:00:00.000Z",
          "type": 3
        }
      ]
    },
    {
      "iso_3166_1": "TR",
      "release_dates": [
        {
          "certification": "",
          "iso_639_1": "",
          "note": "",
          "release_date": "2015-09-11T00:00:00.000Z",
          "type": 3
        }
      ]
    },
    {
      "iso_3166_1": "AU",
      "release_dates": [
        {
          "certification": "M",
          "iso_639_1": "",
          "release_date": "2015-12-01T00:00:00.000Z",
          "type": 5
        }
      ]
    },
    {
      "iso_3166_1": "PH",
      "release_dates": [
        {
          "certification": "",
          "iso_639_1": "",
          "note": "",
          "release_date": "2015-09-02T00:00:00.000Z",
          "type": 3
        }
      ]
    },
    {
      "iso_3166_1": "US",
      "release_dates": [
        {
          "certification": "PG-13",
          "iso_639_1": "",
          "note": "",
          "release_date": "2015-05-21T00:00:00.000Z",
          "type": 3
        }
      ]
    },
    {
      "iso_3166_1": "KR",
      "release_dates": [
        {
          "certification": "15세이상관람가",
          "iso_639_1": "en",
          "release_date": "2015-11-26T00:00:00.000Z",
          "type": 3
        }
      ]
    },
    {
      "iso_3166_1": "GR",
      "release_dates": [
        {
          "certification": "13",
          "iso_639_1": "",
          "note": "",
          "release_date": "2015-09-02T00:00:00.000Z",
          "type": 3
        }
      ]
    },
    {
      "iso_3166_1": "CA",
      "release_dates": [
        {
          "certification": "",
          "iso_639_1": "",
          "note": "",
          "release_date": "2014-09-11T00:00:00.000Z",
          "type": 3
        }
      ]
    }
  ]
}

Now what i really need is to get the certification only from the US, so i would get PG-13. But for some reason whatever i do seems to just return undefined and will not match with the US, the only way i got this to work was showing only [6] which is fine, but US will not always be #6

How can I achieve this?

I think you are missing your javascript code for this question to be clearer. — Erubiel
– Erubiel, Commented Aug 23, 2018 at 13:44

Ankit Agarwal · Accepted Answer · 2018-08-23 13:30:06Z

You can use Array.find() to find the object with US certification. The Array.find() method will find a value that matches the given condition. In your case iso_3166_1 should have value of US.

var data = {
  "id": 283350,
  "results": [{
    "iso_3166_1": "BR",
    "release_dates": [{
      "certification": "12",
      "iso_639_1": "pt",
      "note": "Streaming",
      "release_date": "2017-10-25T00:00:00.000Z",
      "type": 4
    }]
  }, {
    "iso_3166_1": "GB",
    "release_dates": [{
      "certification": "12",
      "iso_639_1": "en",
      "release_date": "2015-12-24T00:00:00.000Z",
      "type": 4
    }]
  }, {
    "iso_3166_1": "SG",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-12-17T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "TR",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-09-11T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "AU",
    "release_dates": [{
      "certification": "M",
      "iso_639_1": "",
      "release_date": "2015-12-01T00:00:00.000Z",
      "type": 5
    }]
  }, {
    "iso_3166_1": "PH",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-09-02T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "US",
    "release_dates": [{
      "certification": "PG-13",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-05-21T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "KR",
    "release_dates": [{
      "certification": "15세이상관람가",
      "iso_639_1": "en",
      "release_date": "2015-11-26T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "GR",
    "release_dates": [{
      "certification": "13",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-09-02T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "CA",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2014-09-11T00:00:00.000Z",
      "type": 3
    }]
  }]
};

var USCertification = data.results.find(({iso_3166_1}) => iso_3166_1 == 'US');
console.log(USCertification);
console.log(USCertification.release_dates[0].certification);

USING PLAIN FUNCTION

var data = {
  "id": 283350,
  "results": [{
    "iso_3166_1": "BR",
    "release_dates": [{
      "certification": "12",
      "iso_639_1": "pt",
      "note": "Streaming",
      "release_date": "2017-10-25T00:00:00.000Z",
      "type": 4
    }]
  }, {
    "iso_3166_1": "GB",
    "release_dates": [{
      "certification": "12",
      "iso_639_1": "en",
      "release_date": "2015-12-24T00:00:00.000Z",
      "type": 4
    }]
  }, {
    "iso_3166_1": "SG",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-12-17T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "TR",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-09-11T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "AU",
    "release_dates": [{
      "certification": "M",
      "iso_639_1": "",
      "release_date": "2015-12-01T00:00:00.000Z",
      "type": 5
    }]
  }, {
    "iso_3166_1": "PH",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-09-02T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "US",
    "release_dates": [{
      "certification": "PG-13",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-05-21T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "KR",
    "release_dates": [{
      "certification": "15세이상관람가",
      "iso_639_1": "en",
      "release_date": "2015-11-26T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "GR",
    "release_dates": [{
      "certification": "13",
      "iso_639_1": "",
      "note": "",
      "release_date": "2015-09-02T00:00:00.000Z",
      "type": 3
    }]
  }, {
    "iso_3166_1": "CA",
    "release_dates": [{
      "certification": "",
      "iso_639_1": "",
      "note": "",
      "release_date": "2014-09-11T00:00:00.000Z",
      "type": 3
    }]
  }]
};

var USCertification = data.results.find(function(obj){
  return obj.iso_3166_1 === 'US';
});
console.log(USCertification);
console.log(USCertification.release_dates[0].certification);

Thank you very much. This was exactly what i was looking for

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