javascript - filter result using 2 JSON -


this saved localstorage, 

[{"industry_id":1,"merchant_id":2}]

i want filter below result, hp.

{     "industries": [         {             "id": 1,             "name": "oil , gas",             "merchant": [                 {                     "id": 1,                     "name": "abc",                 },                 {                     "id": 2,                     "name": "def",                 },                 {                     "id": 3,                     "name": "ghj",                 }             ]         },         {             "id": 2,             "name": "it",             "merchant": [                 {                     "id": 1,                     "name": "apple",                 },                 {                     "id": 2,                     "name": "hp",                 },                 {                     "id": 3,                     "name": "google",                 }             ]         }     ] }

i thought of using multiple $.each have iterate few times , it's quite redundant.

i prefer using javascript for loop, way can skip iterating on every object once required element found.

without jquery (using for)

var i, j, merchant = null; for(i = 0; < data['industries'].length; i++){    if(data['industries'][i]['id'] == arg[0]['industry_id']){       for(j = 0; j < data['industries'][i]['merchant'].length; j++){          if(data['industries'][i]['merchant'][j]['id'] == arg[0]['merchant_id']){              merchant = data['industries'][i]['merchant'][j];              break;          }       }        if(merchant !== null){ break; }    } }

with jquery (using $.each)

    var merchant_found = null;     $.each(data['industries'], function(i, industry){        if(industry['id'] == arg[0]['industry_id']){           $.each(industry['merchant'], function(i, merchant){              if(merchant['id'] == arg[0]['merchant_id']){                 merchant_found = merchant;              }               return (!merchant_found);                       });        }         return (!merchant_found);     }); 

var arg = [{"industry_id":1,"merchant_id":2}];        var data = {          "industries": [              {                  "id": 1,                  "name": "oil , gas",                  "merchant": [                      {                          "id": 1,                          "name": "abc",                      },                      {                          "id": 2,                          "name": "def",                      },                      {                          "id": 3,                          "name": "ghj",                      }                  ]              },              {                  "id": 2,                  "name": "it",                  "merchant": [                      {                          "id": 1,                          "name": "apple",                      },                      {                          "id": 2,                          "name": "hp",                      },                      {                          "id": 3,                          "name": "google",                      }                  ]              }          ]      };          var i, j, merchant = null;      for(i = 0; < data['industries'].length; i++){         if(data['industries'][i]['id'] == arg[0]['industry_id']){            for(j = 0; j < data['industries'][i]['merchant'].length; j++){               if(data['industries'][i]['merchant'][j]['id'] == arg[0]['merchant_id']){                   merchant = data['industries'][i]['merchant'][j];                   break;               }            }                        if(merchant !== null){ break; }         }      }            console.log(merchant);      document.writeln("<b>without jquery:</b><br>");      document.writeln((merchant !== null) ? "found " + merchant['name'] : "not found");        var merchant_found = null;      $.each(data['industries'], function(i, industry){         if(industry['id'] == arg[0]['industry_id']){            $.each(industry['merchant'], function(i, merchant){               if(merchant['id'] == arg[0]['merchant_id']){                  merchant_found = merchant;               }                             return (!merchant_found);                        });         }           return (!merchant_found);      });            console.log(merchant_found);      document.writeln("<br><br><b>with jquery:</b><br>");      document.writeln((merchant_found) ? "found " + merchant_found['name'] : "not found");
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>


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