使用对象内的对象过滤数组

Question

我有一个使用嵌套对象过滤数组的问题.

[{
    "firstName": "Kevin",
    "lastName": "Smith",
    "expenses": {
      "drink1": 25,
      "drink2": 20
    }
  },
  {
    "firstName": "John",
    "lastName": "Rambo",
    "expenses": {
      "coffe": 10,
      "cake": 20
    }
  }
]

我想得到所有费用总和> 35的物品.怎么进去expenses？或者过滤器在这里可能不合适.

Answer 1

就filter这样,用条件reduce来计算费用!挺直的:)

const input = [{
    "firstName": "Kevin",
    "lastName": "Smith",
    "expenses": {
      "drink1": 26,
      "drink2": 20
    }
  },
  {
    "firstName": "John",
    "lastName": "Rambo",
    "expenses": {
      "coffe": 10,
      "cake": 20
    }
  }
];

const output = input.filter(user => Object.values(user.expenses).reduce((acc, expense) => acc + expense) > 45);
console.log(output);

Answer 2

一个可能的解决方案可能是：

arr.filter(function(v){ for(expense in v.expenses){ if(v.expenses[expense] > 10){ return true; }else{ return false; } } })