如何获取对象属性值的数组？

Question

我有这个对象数组，我只需要那些在给定slot_time上属性值大于0的对象，我将如何获得这样的输出。

var array = [
  { time: "10:30", slot: 3, product_Id: 77, amount: 30 }
  , { time: "11:00", slot: 4, product_Id: 77, amount: 30 }
  , { time: "11:30", slot: 2, product_Id: 77, amount: 30 }
  , { time: "12:00", slot: 0, product_Id: 77, amount: 30 }
  , { time: "12:30", slot: 0, product_Id: 77, amount: 30 }
]

输出：

booking_items: [{
        "product_id": "",
        "slot_time": " "
        "slot_quantity": "",
        "amount": "",
        "sub_amount": ""
    },
    {
        "product_id": "",
        "slot_time": ""
        "slot_quantity": "",
        "amount": "",
        "sub_amount": ""
    }
]

Answer 1

我们可以使用filter()：

var array = [
{ time: "10:30", slot: 3, product_Id: 77, amount : 30},
{ time: "11:00", slot: 4, product_Id: 77, amount : 30 },
{ time: "11:30", slot: 2, product_Id: 77, amount : 30 },
{ time: "12:00", slot: 0, product_Id: 77, amount: 30 },
{ time: "12:30", slot: 0, product_Id: 77, amount: 30 }
]

var booking_items = array.filter(obj => obj.slot > 0)
console.log(booking_items)

代码对数组中的每个对象进行检查obj.slot > 0，并返回包含所有通过检查的对象的数组。