What is the best way to input information into an object?

I am having an issue where I am trying to add data into an object, but I keep getting the error "push is not a function".

Here is the object in question:

var item = {
  "_id": {
    "$oid": "asdf976"
  },
  "Categories": [{
    "mainmodels": [{
      "submodels": [{
          "price": "2000",
          "submodelname": "lumia021",
          "Remainingphones": "0",
          "Bookedphones": "0",
          "Numofphones": "10"
        }, {
          "price": "2000",
          "submodelname": "lumia341",
          "Remainingphones": "5",
          "Bookedphones": "5",
          "Numofphones": "10"
        }

      ],
      "Status": "Active",
      "modelname": "lumia",
      "fromdate": "2016-04-01T16:39:12.051Z",
      "todate": "2016-04-31T19:19:44.051Z"
    }],
    "brand": "nokia"
  }],
  "rank": "1",
  "name": "first"
}

I am trying to add the following data:

var modal = {
                'custid': '1',
                'packcode': '22'
            };
            item.push(modal);
            console.log(item);

This is what I am expecting the result to be:

var item = {
  "_id": {
    "$oid": "asdf976"
  },
  "Categories": [{
    "mainmodels": [{
      "submodels": [{
          "price": "2000",
          "submodelname": "lumia021",
          "Remainingphones": "0",
          "Bookedphones": "0",
          "Numofphones": "10"
        }, {
          "price": "2000",
          "submodelname": "lumia341",
          "Remainingphones": "5",
          "Bookedphones": "5",
          "Numofphones": "10"
        }

      ],
      "Status": "Active",
      "modelname": "lumia",
      "fromdate": "2016-04-01T16:39:12.051Z",
      "todate": "2016-04-31T19:19:44.051Z"
    }],
    "brand": "nokia"
  }],
  "rank": "1",
  "name": "first",
  'custid': '1',
  'packcode': '22'
};

Can anyone help me figure out how to achieve this?

javascriptarraysjson

Answer №1

Objects do not have a `push` method; only arrays do.

To achieve what you want, simply assign properties directly to the object like so:

item.custid = '1';
item.packcode = '22';

If separation is crucial, you can utilize `Object.assign` in ES2015:

var modal = {custid: '1', packcode: '22'};
Object.assign(item, modal);

However, in this scenario, maintaining a direct link between `modal` and `item` is not necessary.

Live Example:

var item = {
  "_id": {
    "$oid": "asdf976"
  },
  "Categories": [{
    "mainmodels": [{
      "submodels": [{
          "price": "2000",
          "submodelname": "lumia021",
          "Remainingphones": "0",
          "Bookedphones": "0",
          "Numofphones": "10"
        }, {
          "price": "2000",
          "submodelname": "lumia341",
          "Remainingphones": "5",
          "Bookedphones": "5",
          "Numofphones": "10"
        }

      ],
      "Status": "Active",
      "modelname": "lumia",
      "fromdate": "2016-04-01T16:39:12.051Z",
      "todate": "2016-04-31T19:19:44.051Z"
    }],
    "brand": "nokia"
  }],
  "rank": "1",
  "name": "first"
};
item.custid = '1';
item.packcode = '22';
// JSON used for illustration only
document.body.innerHTML =
  "<pre>" + JSON.stringify(item, null, 2) + "</pre>";

You can also achieve this with `Object.assign`:

var item = {
  "_id": {
    "$oid": "asdf976"
  },
  "Categories": [{
    "mainmodels": [{
      "submodels": [{
          "price": "2000",
          "submodelname": "lumia021",
          "Remainingphones": "0",
          "Bookedphones": "0",
          "Numofphones": "10"
        }, {
          "price": "2000",
          "submodelname": "lumia341",
          "Remainingphones": "5",
          "Bookedphones": "5",
          "Numofphones": "10"
        }

      ],
      "Status": "Active",
      "modelname": "lumia",
      "fromdate": "2016-04-01T16:39:12.051Z",
      "todate": "2016-04-31T19:19:44.051Z"
    }],
    "brand": "nokia"
  }],
  "rank": "1",
  "name": "first"
};
var modal = {
  custid: '1',
  packcode: '22'
};
Object.assign(item, modal);
// JSON used for illustration only
document.body.innerHTML =
  "<pre>" + JSON.stringify(item, null, 2) + "</pre>";

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