I want to avoid id duplication and add values ​using push

ionic-v1
1

The code works fine.
Can I use it like this?

controller

    $scope.items = [
      {"id" : 1 , "itemname" : "name_1", "comment" : "dsdsd", "price" : 5000},
      {"id" : 1 , "itemname" : "name_2", "comment" : "dddd", "price": 3000},
      {"id" : 3 , "itemname" : "name_3", "comment" : "sdasd", "price" : 2000},
      {"id" : 4 , "itemname" : "name_4", "comment" : "asdasd", "price" : 3000},
      {"id" : 5 , "itemname" : "name_5", "comment" : "asdasd", "price" : 2000}
    ]

   $scope.addToCart=function(id,name,comment,price){
      cart.add(id,name,comment,price,1);
    };

service

    cartObj.cart.add=function(id,name,comment,price,qty){
      if( cartObj.cart.find(id)!=-1 ){
	  cartObj.cart[cartObj.cart.find(id)].cart_item_qty+=1;
      cartObj.total_qty+= 1;
      cartObj.total_amount+=( parseInt( cartObj.cart[cartObj.cart.find(id)].cart_item_price) );
	  console.log("id duplication");
	  cartObj.cart.push( { "cart_item_name": name , "cart_item_comment": comment, "cart_item_price": price , "cart_item_qty": qty } );
      }
      else{
        cartObj.cart.push( { "cart_item_id": id , "cart_item_name": name , "cart_item_comment": comment, "cart_item_price": price , "cart_item_qty": qty } );
        cartObj.total_amount+=parseInt(price);
      }
    };

index.html
<'a ng-click="addToCart(item.id, item.itemname, item.comment, item.price)" >[ add cart ]</a'>

cart.html

<'div ng-repeat="item in cart">
  <'div>{{item.cart_item_id}}</div'>
 <'p>{{item.cart_item_name}} {{item.cart_item_qty}} x {{item.cart_item_price}} =
              <'strong>total price: {{ item.cart_item_qty *  item.cart_item_price  }}</strong'>
            <'/p>
</div'>

After the code is executed

id  1
  name_1  ~~~
  name_2  ~~~
id 3
  name_3 ~~~
id 4
  name_4 ~~~
id 5
  name_5 ~~~
2

What exactly is your question? If the code runs fine and produces the wanted result, of course you can use it.