Convert JSON data into javascript object with key and value

Question

I have below json parse data and i am trying to convert it to javascript object

usrPrefs
    [Object { name="mystocks", value="500400,532500,500180,500312,500325"},
     Object { name="mystocksname", value="Tata Power,Maruti Suzuki...NGC,Reliance Industries"},
     Object { name="refresh_secs", value="600"}]

i am trying to convert this to something like below

myparam = {
  mystocks:500400,532500,500180,500312,500325,
  mystocksname:Tata Power,Maruti Suzuki...NGC,Reliance Industries
....
}

how i can do that in javascript something like using loop or any build in function, i started learning javascript and i am stuck here...

thank you in advance.

Regards, Mona

possible duplicate of [Safely turning a JSON string into an object](http://stackoverflow.com/questions/45015/safely-turning-a-json-string-into-an-object) — isherwood, Jul 30 '14 at 16:36
And var myArray = []; myArray = JSON.parse(usrPrefs); doesn't work? — The One and Only ChemistryBlob, Jul 30 '14 at 16:40
As all answers are correct. i have voted all. But accepted which one suits my need. Thank you very much everyone. — SmartDev, Aug 03 '14 at 14:03

Marlon Bernardes · Accepted Answer · 2014-07-30T16:55:24.930

1

You could use the reduce function in order to achieve that:

var myparam = usrPrefs.reduce(function(a, b){
  a[b.name] = b.value;
  return a;
}, {});

edited Jul 30 '14 at 16:55

answered Jul 30 '14 at 16:37

Marlon Bernardes

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This will return an array of objects each with a single key and value, which is not what is wanted. – Stuart Jul 30 '14 at 16:45
@Stuart True! I'm gonna fix that. – Marlon Bernardes Jul 30 '14 at 16:52

Olim Saidov · Answer 2 · 2014-07-30T16:51:28.787

1

Try this code:

var myparam = {};

for (var i = 0; i < usrPrefs.length; i++) {
    myparam[usrPrefs[i].name] = usrPrefs[i].value;
}

edited Jul 30 '14 at 16:51

answered Jul 30 '14 at 16:44

Olim Saidov

2,796
1
25
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Why are you skipping the last element of the array? You need to change `i < usrPrefs.length - 1` to `i < usrPrefs.length` – Marlon Bernardes Jul 30 '14 at 16:50
My bad, sorry. Fixed. – Olim Saidov Jul 30 '14 at 16:51

score 1 · Answer 3 · answered Jul 30 '14 at 16:45

You might choose to use array instead of string, its more convenient for you to use

function toMap(usrPrefs){ 
     var result = {};
     for(var i = 0 ; i < usrPrefs.length ; i++){
         var obj = usrPrefs[i];
         var array =  obj.value.split(',').trim();
         result[obj.name] = array;
      }
      return result;
 };

Convert JSON data into javascript object with key and value

3 Answers3