How to change JSON form?

Question

How to change JSON form?

I have following json

{"result": { "a": 1, "b": 2 "c": [ { "d": 3, "e": 4 }, { "d": 3, "e": 4 } ] }}

I want to change it become like this:

{"result": [{ "a": 1, "b": 2, "d": 3, "e": 4 }, { "a": 1, "b": 2, "d": 3, "e": 4 }]}

is there a way change JSON like this?

javascript
json
node.js
mongodb

Answer 1

You can use Array.prototype.reduce() for this:

var obj = {"result": { "a": 1, "b": 2, "c": [ { "d": 3, "e": 4 }, { "d": 3, "e": 4 } ] }};

var res = obj.result.c.reduce(function(res, arrObj) {
    res.result.push({a:obj.result.a, b:obj.result.b, d:arrObj.d, e:arrObj.e});
    return res;
}, {result:[]});

Or if it should be more dynamic, then like this:

var res = obj.result.c.reduce(function(res, arrObj) {
    Object.keys(obj.result).forEach(function(key) {
       if (typeof obj.result[key] !== 'object')
           arrObj[key] = obj.result[key];
    });
    res.result.push(arrObj);
    return res;
}, {result:[]});