CODEWITHSUNDEEP
javascriptjqueryarraysjson
ucnumara
ucnumara

Reputation: 165

How to access JSON Nested arrays with jquery

I'm trying to access all brands and values for dropdown menu but I couldn't that with this way. 

<select id="secim">
</select>

var data = [
        {
          "products": "Cars",
          "brands_values" : [
            {"brand":"fiat","value":1},
            {"brand":"bmw","value":2}
          ]
      }
      ];

$.each(data, function(i, item) {
        $('#secim').append($('<option>', {
          value: item.brands_values.value,
          text: item.brands_values.brand
        }));
      });

How could I do? Thank you

Upvotes: 4

Views: 2248

Answers (4)

Suresh Atta
Suresh Atta

Reputation: 121998

Iterate over brand values and not just data. So that you can acces each brand and value.

  var data = [
        {
          "products": "Cars",
          "brands_values" : [
            {"brand":"fiat","value":1},
            {"brand":"bmw","value":2}
          ]
      }
      ];

  
  $.each(data[0].brands_values, function(i, item) {
       $('#secim').append($('<option>', {
              value: item.value,
              text: item.brand
            }));
          });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="secim">
</select>

Upvotes: 0

DontVoteMeDown
DontVoteMeDown

Reputation: 21465

Just add another loop for the brands:

var data = [
  {
    "products": "Cars",
    "brands_values" : [
      {"brand":"fiat","value":1},
      {"brand":"bmw","value":2}
    ]
}];

$.each(data, function(i, item) {
  if (item.brands_values) {
      item.brands_values.forEach(brands => {
        $('#secim').append($('<option>', {
          value: brands.value,
          text: brands.brand
        }));
      });
   }
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="secim">
</select>

Note: You may want to use native .forEach in that case, since it is enough. I had performance issues with jQuery.each() in the past so I avoid it whenever I can(check this):

data.forEach(item => {
    if (item.brands_values) {
        item.brands_values.forEach(brands => {
            $('#secim').append($('<option>', {
                value: brands.value,
                text: brands.brand
            }));
        });
    }
});

Upvotes: 3

kukkuz
kukkuz

Reputation: 42352

First create a list of brand_values from data by using a #reduce() function. Then pass it as items to your $.each.

See demo below:

var data = [{
  "products": "Cars",
  "brands_values": [{
      "brand": "fiat",
      "value": 1
    },
    {
      "brand": "bmw",
      "value": 2
    }
  ]
}];

var items = data.reduce(function(p,c){
  c.brands_values.forEach(function(e){
    p.push(e);
  });
  return p;
},[]);

$.each(items, function(i,item) {
  $('#secim').append($('<option>', {
    value: item.value,
    text: item.brand
  }));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="secim"></select>

Upvotes: 0

konrad_pe
konrad_pe

Reputation: 1190

$.each(data, function(i, item) {
  $.each(item.brands_values, function(j, brand){
    $('#secim').append($('<option>', {
      value: brand.value,
      text: brand.brand
    }));
  });
});

You need another iteration - of course the first "loop" is not very elegant, but this is due to the given data format.

Working Fiddle: https://jsfiddle.net/3pL6n6pj/

Upvotes: 2

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