計算重復項並在對象數組中對它們進行排序 Javascript

Question

我有以下對象數組：

 [ { id: 1, someOtherStuff: 'abc, Drink: { name: 'Coca-Cola', price: 2.5 } }, { id: 2, someOtherStuff: 'def, Drink: { name: 'Fanta Orange', price: 3 } }, { id: 3, someOtherStuff: 'ghi, Drink: { name: 'Sprite', price: 1.8 } }, { id: 6, someOtherStuff: 'jkl, Drink: { name: 'Coca-Cola', price: 2.5 } }, { id: 7, someOtherStuff: 'mno, Drink: { name: 'Coca-Cola', price: 2.5 } } ]

我想通過這樣的重復項對它們進行分組：

 [ { count: 3, drinkName: 'Coca-Cola', price: 2.5 }, { count: 1, drinkName: 'Fanta Orange', price: 3 }, { count: 1, drinkName: 'Sprite', price: 1.8 } ]

我嘗試了幾種方法來映射一個新數組。但不幸的是我無法讓它工作

我希望有人可以幫助我

Answer 1

let result= {};
inputArray.map((item)=>{
  let key = `${item.Drink.name}-${item.Drink.price}`;
  if(result[key]){
    result[key].count = result[key].count +1;
  }else{
    result[key] = {count:1,drinkName:item.Drink.name,price:item.Drink.price};
  }
});
result = Object.values(result);