javascript - Editing an object in nested data structure -


i have data structure this:

var fieldtmp= [{ "countrydetails":[{     "countryname":"kerala",     "jobdetails":[{         "requisitionid":"00020447961",         "city":"kochi",         "posteddate":"2016-12-18"         },{         "requisitionid":"26103",         "city":"trivandrum",         "posteddate":"2016-12-12"         },{         "requisitionid":"26077",         "city":"alappey",         "posteddate":"2016-10-09"         },{         "requisitionid":"00020774701",         "city":"kottayam",         "posteddate":"2016-06-12"         },{         "requisitionid":"26078",         "city":"adoor",         "posteddate":"2016-05-19"}]     },     "countryname":"madras",     "jobdetails":[{         "requisitionid":"0025456",         "city":"chennai",         "posteddate":"2017-06-05"         },{         "requisitionid":"69847562",         "city":"adyar",         "posteddate":"2016-10-14"}]     },     {"countryname":"tamil nadu",     "jobdetails":[{         "requisitionid":"00020550501",         "city":"chennai",         "posteddate":"2016-12-18"         },{         "requisitionid":"00020786022",         "city":"kovai",         "posteddate":"2016-09-01"         },{         "requisitionid":"00020786071",         "city":"trichy",         "posteddate":"2016-04-10"}] }] }]

my requirement is, need add job details under madras tamil nadu , need sort data based on 1 property -posteddate. result should like,

var fieldtmp= [{ "countrydetails":[{     "countryname":"kerala",     "jobdetails":[{         "requisitionid":"00020447961",         "city":"kochi",         "posteddate":"2016-12-18"         },{         "requisitionid":"26103",         "city":"trivandrum",         "posteddate":"2016-12-12"         },{         "requisitionid":"26077",         "city":"alappey",         "posteddate":"2016-10-09"         },{         "requisitionid":"00020774701",         "city":"kottayam",         "posteddate":"2016-06-12"         },{         "requisitionid":"26078",         "city":"adoor",         "posteddate":"2016-05-19"}]     },     {"countryname":"tamil nadu",     "jobdetails":[{         "requisitionid":"0025456",         "city":"chennai",         "posteddate":"2017-06-05"         },{         "requisitionid":"00020550501",         "city":"chennai",         "posteddate":"2016-12-18"         },{         "requisitionid":"69847562",         "city":"adyar",         "posteddate":"2016-10-14"         },{         "requisitionid":"00020786022",         "city":"kovai",         "posteddate":"2016-09-01"         },{         "requisitionid":"00020786071",         "city":"trichy",         "posteddate":"2016-04-10"}] }] }]

i tried extract madras data , add under tamil nadu. nothing working. know how extract single or multiple value json object. need edit json , sort it. able it.

i got solution. when countryname "tamil nadu" , "madras",i extracted data , saved in new array using below code.

function mergingbothstatedetails(jsonjobdetails){ for(var j=0;j<jsonjobdetails.length;j++) {     newtmprecord.push({"requisitionid":jsonjobdetails[j].requisitionid,                        "posteddate":jsonjobdetails[j].posteddate,                        "city":jsonjobdetails[j].city});  }  }

here newtmprecord array , universal variable

for sorting used below codes

    function sortnewlist(){     newtmprecord.sort(function(a, b){ // sort object retirement date         var datea=new date(a.posteddate), dateb=new date(b.posteddate)         return dateb-datea //sort date descending     }); }

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