通过在另一个数组中定义的特定值和键过滤出对象数组

Question

我有这些数据：

const data = [ 
  {animal: 'cat', name: 'mu', date: new Date(2020, 0, 1), status: -1},
  {animal: 'cat', name: 'muji', date: new Date(2021, 0, 1), status: 0},
  {animal: 'cat', name: 'mine', date: new Date(2021, 0, 1), status: 1},
  {animal: 'dog', name: 'fido', date: new Date(2021, 0, 1), status: 1}, 
  {animal: 'dog', name: 'fido2', date: new Date(2020, 0, 1), status: 1}, 
  {animal: 'dog', name: 'fido3', date: new Date(2021, 0, 1), status: 0}, 
  {animal: 'hamster', name: 'gerry', date: new Date(2019, 0, 1), status: 0}, 
  {animal: 't-rex', name: 'dino', date: new Date(2020, 0, 1), status: 0},
  {animal: null, name: 'sauro', date: new Date(2019, 0, 1), status: 0},
  {animal: 'sheep', name: 's', date: new Date(2019, 0, 1), status: 0}, 
  {animal: 'sheep', name: 'sss', date: new Date(2019, 0, 1), status: -1}, 
]

我想通过键和值过滤这个数组：

const MANDATORY_FIELDS = [{col:'animal', v: ['', null, undefined]}, {col:'status', v: [-1, null, undefined]}]

所以我确实想要在animal 键中具有'' || null || undefined 值的记录，并且在status 键中既没有具有-1 || null || undefined 的行。

所以结果应该是：

const data = [ 
  {animal: 'cat', name: 'muji', date: new Date(2021, 0, 1), status: 0},
  {animal: 'cat', name: 'mine', date: new Date(2021, 0, 1), status: 1},
  {animal: 'dog', name: 'fido', date: new Date(2021, 0, 1), status: 1}, 
  {animal: 'dog', name: 'fido2', date: new Date(2020, 0, 1), status: 1}, 
  {animal: 'dog', name: 'fido3', date: new Date(2021, 0, 1), status: 0}, 
  {animal: 'hamster', name: 'gerry', date: new Date(2019, 0, 1), status: 0}, 
  {animal: 't-rex', name: 'dino', date: new Date(2020, 0, 1), status: 0},
  {animal: 'sheep', name: 's', date: new Date(2019, 0, 1), status: 0}, 
]

我正在开始创建这个函数，但我不知道如何继续：

function filterData() {
 return data.filter((datum) => {
    return ??
  }) 
}

const filtered = filterData()

我的问题与How to filter array when object key value is in array 类似，但有点复杂

Answer 1

您可以通过检查属性来过滤对象。

const
    data = [{ animal: 'cat', name: 'mu', date: new Date(2020, 0, 1), status: -1 }, { animal: 'cat', name: 'muji', date: new Date(2021, 0, 1), status: 0 }, { animal: 'cat', name: 'mine', date: new Date(2021, 0, 1), status: 1 }, { animal: 'dog', name: 'fido', date: new Date(2021, 0, 1), status: 1 }, { animal: 'dog', name: 'fido2', date: new Date(2020, 0, 1), status: 1 }, { animal: 'dog', name: 'fido3', date: new Date(2021, 0, 1), status: 0 }, { animal: 'hamster', name: 'gerry', date: new Date(2019, 0, 1), status: 0 }, { animal: 't-rex', name: 'dino', date: new Date(2020, 0, 1), status: 0 }, { animal: null, name: 'sauro', date: new Date(2019, 0, 1), status: 0 }, { animal: 'sheep', name: 's', date: new Date(2019, 0, 1), status: 0 }, { animal: 'sheep', name: 'sss', date: new Date(2019, 0, 1), status: -1 }],
    MANDATORY_FIELDS = [{ col: 'animal', v: ['', null, undefined] }, { col: 'status', v: [-1, null, undefined] }],
    result = data.filter(o =>
        !MANDATORY_FIELDS.some(({ col, v }) => v.includes(o[col]))
    );

console.log(result);

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