Getting values from array of objects

Question

I've got an array of objects

var arr1 = [{
        "amount": 700,
        "hits": 4,
        "day": 1
    },
    {
        "amount": 100,
        "hits": 7,
        "day": 4
    },
    {
        "amount": 500,
        "hits": 3,
        "day": 8
    }
];

What I need is to create a new array of objects, with key "param" in each object, and the value of "param" should be equals to "amount" field in arr1 objects.

Expected output:

var newArr = [{
        "param": 700
    },
    {
        "param": 100
    },
    {
        "param": 500
    }
];

var newArr = arr1.map(o => ({param: o.amaunt}));

Tushar
– Tushar

2016-08-17 13:10:13 +00:00
Commented Aug 17, 2016 at 13:10 — Tushar
– Tushar, Commented Aug 17, 2016 at 13:10

Yosvel Quintero · Accepted Answer · 2016-08-17 13:19:19Z

3

You can user Array.prototype.map():

var arr1 = [{"amaunt": 700,"hits": 4,"day": 1}, {"amaunt": 100,"hits": 7,"day": 4}, {"amaunt": 500,"hits": 3,"day": 8}],
    newArr = arr1.map(function(elem) {
        return {param: elem.amaunt};
    });

console.log(newArr);

edited Aug 17, 2016 at 13:19

answered Aug 17, 2016 at 13:14

Yosvel Quintero

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Comments

jcubic · Accepted Answer · 2016-08-17 13:13:55Z

2

Try using map:

var arr1 = [
  {
    "amaunt": 700,
    "hits":4,
    "day":1
  },
  {
    "amaunt": 100,
    "hits":7,
    "day":4
  },
  {
    "amaunt": 500,
    "hits":3,
    "day":8
  }
];
var arr2 = arr1.map(function(obj) {
  return {param: obj.amaunt};
});
console.log(arr2);

answered Aug 17, 2016 at 13:13

jcubic

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Comments

brso05 · Accepted Answer · 2016-08-17 13:22:55Z

2

var newArr = []
arr1.forEach(obj => {
   newArr.push({param: obj.amount});
});

edited Aug 17, 2016 at 13:22

brso05

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answered Aug 17, 2016 at 13:12

flott

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Comments

Paarth · Accepted Answer · 2016-08-17 13:18:37Z

1

You can try this

var arr1 = [
            {
                "amaunt": 700,
                "hits":4,
                "day":1
            },
            {
                "amaunt": 100,
                "hits":7,
                "day":4
            },
            {
                "amaunt": 500,
                "hits":3,
                "day":8
            }
        ];

    var newArr=[];
    arr1.forEach(function(item){
        newArr.push({"param":item.amaunt});
    });
    console.log(newArr);

answered Aug 17, 2016 at 13:18

Paarth

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Comments

Kumar · Accepted Answer · 2016-08-17 13:19:43Z

0

Try this

arr1.forEach(function(data){            
          var obj = {"param": data.amount};          
          newArr.push(obj);          
        })

Fiddle here

answered Aug 17, 2016 at 13:19

Kumar

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Comments

Geek-Peer · Accepted Answer · 2016-08-17 13:25:37Z

0

Another way you can do this

var newArr=[];  
arr1.map(function(obj) {
newArr.push("param:"+obj.amaunt);
 });

answered Aug 17, 2016 at 13:25

Geek-Peer

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