Access attributes-array in json

Question

I am trying to access an specific attribute in a json array. I've already looked here and it helped me for the general understanding but for my specific use case it does not work.

The json looks like this:

{
    "uuid": "3a8ed45f-28e7-4263-8437-d926c6a194f4",
    "number": "3310010",
    "shortname": "FUESTRUP",
    "longname": "FUESTRUP",
    "km": 102.177,
    "agency": "WSA RHEINE",
    "longitude": 7.680240800859249,
    "latitude": 52.04026675873374,
    "water": {
        "shortname": "EMS",
        "longname": "EMS"
    },
    "timeseries": [{
        "shortname": "W",
        "longname": "WASSERSTAND ROHDATEN",
        "unit": "cm",
        "equidistance": 15,
        "gaugeZero": {
            "unit": "m. ü. NN",
            "value": 35.69,
            "validFrom": "1952-02-01"
        }
    }]
}

Now I want to access the value-Property within the gaugeZero-Collection within the timeseries-array. I've already tried to do this by using:

data.timeseries[0].longname.gaugeZero.value

but this does not work (it's undefinied).

Thanks for your help!

JSON is just a string are you converting your JSON to a javascript object first? — Ballbin
– Ballbin, Commented May 19, 2014 at 22:26

mason · Accepted Answer · 2014-05-19 22:26:48Z

4

gaugeZero is not a property of longname. You have to access it like this...

data.timeseries[0].gauzeZero.value

Assuming that data is the JavaScript object created from the JSON.

answered May 19, 2014 at 22:26

mason

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1 Comment

schlomm Over a year ago

Thanks! I've made a typo - of course I know that gaugeZero is not a property of longname. Anyway...Thanks a lot :) Unfortunately now I have a different problem. I am working with Leaflet and the JsonLayer Plugin, but by accessing value with your mentioned way, I get a error (the json file is coming from an url). I've created a jsfiddle here ( check Line 33/35, which make the trick) to show you the error. Maybe you have an idea?

amunozdv · Accepted Answer · 2014-05-19 22:30:57Z

0

Use data.timeseries[0].gaugeZero.value instead of

data.timeseries[0].longname.gaugeZero.value

.

answered May 19, 2014 at 22:30

amunozdv

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diegoaguilar · Accepted Answer · 2014-05-19 22:34:15Z

0

data.timeseries[0].longname.gaugeZero.value

Won't ever work, as longname doesn't have a gaugeZero property. Just the same as trying data.color or data.timeseries[0].animals as examples.

You need to:

Get your JSON to an object.
Then having an object data:

data.timeseries[0].gaugeZero.value

You can test it at your browser console or at Node repl and see the magic work.

edited May 19, 2014 at 22:34

answered May 19, 2014 at 22:28

diegoaguilar

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Comments

bibumathew · Accepted Answer · 2014-05-19 23:05:14Z

0

gaugeZero is not a property of longname

data['timeseries']["longname"]["gaugeZero"]["value"];

http://jsfiddle.net/YP68N/

answered May 19, 2014 at 23:05

bibumathew

1

1 Comment

JackDev Over a year ago

if there an alternative you can suggest?

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