How to create dynamic array in JavaScript?

Question

I have an array like

{
  "Count": 3,
  "Items": [
    {
      "prod_price": {
        "N": "100"
      },
      "prod_name": {
        "S": "Laptop"
      },
      "prod_Id": {
        "N": "3"
      }
    },
    {
      "prod_price": {
        "N": "1000"
      },
      "prod_name": {
        "S": "Mouse"
      },
      "prod_Id": {
        "N": "2"
      }
    },
    {
      "prod_price": {
        "N": "2000"
      },
      "prod_name": {
        "S": "Keyboard"
      },
      "prod_Id": {
        "N": "1"
      }
    }
  ],
  "ScannedCount": 3
}

I need the output like

{
  "Count": 3,
  "Items": [
    {
      "prod_price" : "100",
      "prod_name": "Laptop",
      "prod_Id":  "3"
    },
    {
      "prod_price" : "1000",
      "prod_name": "mouse",
      "prod_Id":  "2"
    },
    {
      "prod_price" : "2000",
      "prod_name": "keyboard",
      "prod_Id":  "1"
    },

  ],
  "ScannedCount": 3
}

I am trying to get this output but no able to get this can you help me for this.

var items=data['Items'];
        var itemresult={};
        itemvalues={};


    for(var attributename in items){

        for(var itemattribute in items[attributename]){

            for(var key in items[attributename][itemattribute]){

              console.log(itemvalues);
              itemresult.attributename.itemattribute=items[attributename][itemattribute][key];

            }

        }

I am new to node.js and don't how to work with the for loops exactly. I have tried my best, as if in php we have the for-each loop so we can skip the index value.

If I can get that so this conversion will be done. I don't know how to get that, can you please help me to find the solution?

I know there can be some problem because I don't know the exact syntax so any help would be appreciated. Thank you

why just not to use Array.map, it's both browser/nodejs; or some of the lodash.com toolbox — shershen
– shershen, Commented Aug 11, 2015 at 7:47
As a note: This is not related to node but a regular JavaScript question (I know this is somehow nit picking, but you should always be clear about what it language and what it platform specific) . Beside that you should take care what kind of loop you use for which kind of object. Why is using “for…in” with array iteration such a bad idea?. — t.niese
– t.niese, Commented Aug 11, 2015 at 7:48

Alex Booker · Accepted Answer · 2015-08-11 07:55:05Z

2

var items = data['Items'];

var result = [];
items.forEach(function(item) {
  result.push({
    prod_price: item.prod_price.N,
    prod_name: item.prod_name.S,
    prod_Id: item.prod_Id.N
  });
});

Optionally you could use .map:

var result = items.map(function(item) {
  return {
    prod_price: item.prod_price.N,
    prod_name: item.prod_name.S,
    prod_Id: item.prod_Id.N
  };
});

edited Aug 11, 2015 at 7:55

answered Aug 11, 2015 at 7:46

Alex Booker

10.9k4 gold badges28 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

mfeineis Over a year ago

It should be noted that this is only working in environments that support ES5 Array#forEach or Array#map

Alex Booker Over a year ago

@vanhelgen Yep. The question is tagged Node so I think he'll be OK. Well worth pointing out, though.

mfeineis Over a year ago

Ahh, fair enough. I glanced over this - but at least it's not wrong g

Collectives™ on Stack Overflow

How to create dynamic array in JavaScript?

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related