remove duplicates items from the list in javascript : The list is,

    {id: 11, type: "sell", quantity: 11, price: 155}
    {id: 11, type: "sell", quantity: 11, price: 155}
    {id: 11, type: "sell", quantity: 11, price: 155}
    {id: 12, type: "buy", quantity: 3, price: 189}
    {id: 13, type: "buy", quantity: 4, price: 189}
    {id: 14, type: "buy", quantity: 2, price: 189}
    {id: 14, type: "buy", quantity: 2, price: 189}
(almost 1000 items)
I want to remove duplicates items from the list in javascript, for example, as items of id 11 and 14 having duplicates, so the new list will be after removing,
   

      {id: 12, type: "buy", quantity: 3, price: 189}
        {id: 13, type: "buy", quantity: 4, price: 189}
        