Access JSON key value dynamically using jquery

Question

Below is my json which is dynamic. I want to access 'bf' key in the json , 'xxxxxx20160929' and 'yyy813AI20160929' keys are dynamic but json structure will be the same

{
  "resultData": [
    {
      "a": "124",
      "b": "0",
      "c": "0",
      "flc_schedu": {
          "e": "6",
          "f": "en",
          "xxxxxx20160929": [
            {"ID": "yyyyyyyy" },
            {"ID": "fffff"}
         ]
      },
      "fareDetails": {
        "xxxxxx20160929": {
          "yyy813AI20160929": {
            "O": {
              "AD": {
                "bf": "2527"
                    }
                 }
          }
        }
            }
    }
  ]
}

Below is how I tried

response.resultData[0].fareDetails[Object.keys(response.resultData[0].fareDetails)[0]]

If I try as above I can able to access dynamically up to "xxxxxx20160929" key, but I can't able get how to reach up to "bf" key dynamicaly.

@Pat : yyy813AI20160929 key is dynamic, its not possible to do like u given — siva shanker
– siva shanker, Commented Sep 24, 2016 at 13:46
Try this: data.resultData[0].fareDetails.xxxxxx20160929['yyy813AI20160929'].O.AD.bf — Samuel
– Samuel, Commented Sep 24, 2016 at 13:48
@Samuel : : yyy813AI20160929 key is dynamic, we cannot keep it static as u given — siva shanker
– siva shanker, Commented Sep 24, 2016 at 13:49
that is simple - you can do this var data = <<< access dynamically up to "xxxxxx20160929" >>> then do this (provided there is only 1 child agreed for xxxxxx20160929) var value; for (var key in data) { value = key; } thenyou have your bf value - data.value.O.AD.bf — Patrick
– Patrick, Commented Sep 24, 2016 at 14:03

Samuel · Accepted Answer · 2016-09-24 14:08:50Z

1

You can reference an object using the array syntax.

var one = 'xxxxxx20160929';
var two = 'yyy813AI20160929';
data.resultData[0].fareDetails[one][two].O.AD.bf;

UPDATE:

This code assumes there is only one dynamic object at each layer.

var one = Object.keys(data.resultData[0].fareDetails)[0];
var two = Object.keys(data.resultData[0].fareDetails[one])[0];
var thing = data.resultData[0].fareDetails[one][two].O.AD.bf;

edited Sep 24, 2016 at 14:08

answered Sep 24, 2016 at 13:52

Samuel

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5 Comments

siva shanker Over a year ago

: xxxxxx20160929, yyy813AI20160929 key are dynamic, we cannot keep it static as u given

siva shanker Over a year ago

Can you sugget how to access "yyy813AI20160929" dynamically

Samuel Over a year ago

Do you mean you don't know what the property is named?

siva shanker Over a year ago

i undestood above way but u kept 'two' variable static and taking 'yyy813AI20160929', i want to know how to take 'yyy813AI20160929' value dynamically from above json

Samuel Over a year ago

I updated the answer to show how to get the key dynamically for each layer.

tocsoft · Accepted Answer · 2016-09-24 14:09:48Z

function getBFFromFareDetails(details){
 var bfValues = [];
  for(var k in details.fareDetails){
   // loop over the children of fareDetails
   if( details.fareDetails.hasOwnProperty( k ) ) {
      //each entry in ;fareDetails'
      var itemRoot = details.fareDetails[k]
      for(var k1 in itemRoot){
         // loop over the children of the first unknown item
          if( itemRoot.hasOwnProperty( k1 ) ) {
              //return the bf from the first unknown child
             return itemRoot[k1].O.AD.bf;
          }
      }
    } 
  }
}

If you call this with var bf = getBFFromFareDetails(response.resultData[0]) this will return the value for the first bf in the first child of fareDetails and its first child.

You can see a quick example in action here https://jsfiddle.net/tocsoft/5364x2sp/

Dominofoe · Accepted Answer · 2016-09-24 14:12:31Z

0

If you are able to access up to "xxxxxx20160929" level then create a var to store that level, then use that variable to access the next which you will need to store in a variable, then use both variable to access the key needed.

var1 = response.resultData[0].fareDetails)[0];
var2 = response.resultData[0].fareDetails)[0][var1];

response.resultData[0].fareDetails)[0][var1][var2];

answered Sep 24, 2016 at 14:12

Dominofoe

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