如何根据条件对对象数组进行排序？

Question

    let array = [
  {
    "vendorBidId": null,
    "participantName": "test+10@mail.com",
    "bidAmount": 0,
    "productionRate": null,
    "bidTime": null,
    "isYou": false,
    "awarded": false
  },
  {
    "vendorBidId": 16,
    "participantName": "test+2@mail.com",
    "bidAmount": 131,
    "productionRate": 131,
    "bidTime": "2021-09-18T08:11:21.295",
    "isYou": true,
    "awarded": false
  },
  {
    "vendorBidId": 20,
    "participantName": "test@mail.com",
    "bidAmount": 30,
    "productionRate": 30,
    "bidTime": "2021-0a-18T08:11:21.295",
    "isYou": true,
    "awarded": false
  },
  {
    "vendorBidId": 30,
    "participantName": "test@mail.com",
    "bidAmount": 40,
    "productionRate": 40,
    "bidTime": "2021-0a-18T08:11:21.295",
    "isYou": true,
    "awarded": false
  },
  {
    "vendorBidId": null,
    "participantName": "test+10@mail.com",
    "bidAmount": 0,
    "productionRate": null,
    "bidTime": null,
    "isYou": false,
    "awarded": false
  },
  {
    "vendorBidId": 40,
    "participantName": "test@mail.com",
    "bidAmount": 50,
    "productionRate": 50,
    "bidTime": "2021-0a-18T08:11:21.295",
    "isYou": true,
    "awarded": false
  }
]

我想按升序（bidAmount）对这个数组进行排序，如果 vendorBidId 为空，则不要排序保留在底部。

我试过这样

array.sort((a,b) => parseFloat(a.bidAmount) - parseFloat(b.bidAmount)).map((ele) => console.log(ele.bidAmount))

我需要一个像 30,40,50,131,0,0 这样的输出，但对于我上面的代码，它只会排序。 我尝试使用 reduce 但这不能正常工作

Answer 1

array.sort((a,b) => {
  const n = a.vendorBidId === null ? Number.MAX_VALUE : a.bidAmount;
  const m = b.vendorBidId === null ? Number.MAX_VALUE : b.bidAmount;
  return n - m; 
});
// "2.5" + "3.5" = "2.53.5"
// "2.5" - "3.5" = -1 

Answer 2

1. 根据 vendorBidId 是否为 null 来分隔您的数组。
2. 对要排序的部分进行排序
3. 连接另一个数组。

Answer 3

以 DragatS 共享的内容为基础......只需像这样映射 sort() 的结果即可得到 [30,40,50,131,0,0] 的结果

const res = array
.sort((a, b) => {
    const n = a.vendorBidId === null ? Number.MAX_VALUE : a.bidAmount;
    const m = b.vendorBidId === null ? Number.MAX_VALUE : b.bidAmount;
    return n - m;
})
.map(item => item.bidAmount);
console.log(res);