javascript - create json like key and value -

- 

var data1=[     {"year":2000,      "country":"madagascar",      "country_id":847,      "indicator":"current account balance - national currency (millions)"     },     {"year":2005,      "country":"madagascar",      "country_id":847,      "indicator":"current account balance - national currency (millions)"     },     {"year":2000,      "country":"madagascar",      "country_id":847,      "indicator":"net income - national currency (millions)"     },     {"year":2005,      "country":"madagascar",      "country_id":847,      "indicator":"net income - national currency (millions)"     } ]

this json data want using underscorejs

{   "key":"madagascar"   "values":[     {"year":2000,      "country":"madagascar",      "country_id":847,      "indicator":"current account balance - national currency (millions)"     },     {"year":2005,      "country":"madagascar",      "country_id":847,      "indicator":"current account balance - national currency (millions)"     }   ] }

please can 1 can me solve problem using underscore.js

underscore has _.groupby() method can heavy lifting, creates object key each value:

var groupeddata1 = _.groupby(data1, 'country');

here's value of groupeddata1:

{"madagascar": [     {         "year": 2000,         "country": "madagascar",         "country_id": 847,         "indicator": "current account balance - national currency (millions)"     },      {         "year": 2005,         "country": "madagascar",         "country_id": 847,         "indicator": "current account balance - national currency (millions)"     },      {         "year": 2000,         "country": "madagascar",         "country_id": 847,         "indicator": "net income - national currency (millions)"     },      {         "year": 2005,         "country": "madagascar",         "country_id": 847,         "indicator": "net income - national currency (millions)"     } ]}

to convert array of key/values, can use _.each() , _.keys() iterate through each country:

var groupeddata2 = [];  _.each(_.keys(groupeddata1), function (country) {     groupeddata2.push({         "key": country,          "values": groupeddata1[country]     }); });

this creates array of objects, 1 object each country:

[{     "key": "madagascar",     "values": [{         "year": 2000,         "country": "madagascar",         "country_id": 847,         "indicator": "current account balance - national currency (millions)"     }, {         "year": 2005,         "country": "madagascar",         "country_id": 847,         "indicator": "current account balance - national currency (millions)"     }, {         "year": 2000,         "country": "madagascar",         "country_id": 847,         "indicator": "net income - national currency (millions)"     }, {         "year": 2005,         "country": "madagascar",         "country_id": 847,         "indicator": "net income - national currency (millions)"     }] }]

Comments

Post a Comment

Popular posts from this blog

Hatching array of circles in AutoCAD using c# -

-
i beginner in autocad plugins .i have created array of circle using following code. now, have hatch circles in array .how that??how hatch circles @ once? moreover, how can return hatch method , use hatch objects.sorry language.thanks in advance. [assembly: commandclass(typeof(beamsection.class1))] namespace beamsection { public class class1 { //class1 obj = new class1(); [commandmethod("beamatsupport")] public void addlightweightpolyline() { // current document , database document acdoc = application.documentmanager.mdiactivedocument; database accurdb = acdoc.database; promptpointresult ppr = acdoc.editor.getpoint("\nselect starting point "); var ucs = acdoc.editor.currentusercoordinatesystem; point3d startingpt = ppr.value.transformby(ucs); list<double> radius = new list<double>(); radius.add(0.5); ...
Read more

ios - UITEXTFIELD InputView Uipicker not working in swift -

-
hello trying pop uipickerview view programmatically when user clicks on textfield. have tried doesn't doing anything. isn't working. nothing happening when click textfield class userprofiletableviewcontroller: uitableviewcontroller,uitextfielddelegate,uipickerviewdelegate,uipickerviewdatasource { var itempicker: uipickerview! = uipickerview() @iboutlet weak var gendertxtfield: uitextfield! var gender = ["male","female"] override func viewdidload() { super.viewdidload() gendertxtfield.delegate = self itempicker!.delegate = self itempicker!.datasource = self itempicker!.backgroundcolor = uicolor.blackcolor() self.gendertxtfield.inputview = itempicker } func numberofcomponentsinpickerview(pickerview: uipickerview) -> int{ return 1 } // returns # of rows in each component.. func pickerview(pickerview: uipickerview, numberofrowsincomponent component:...
Read more