javascript - 过滤数组中的数组并仅获取过滤后的项目

Question

我有以下名为过滤器的数组，并尝试按所选项目对其进行过滤。
最后，我希望在选定项目所在的位置设置所有过滤器，但仅限选定项目

let filters = [
  {
    id: 0,
    name: 'property',
    items: [
      {
        id: 0,
        name: 'x',
        isSelected: false
      },
      {
        id: 1,
        name: 'y',
        isSelected: true
      }
    ]
  },
  {
    id: 1,
    name: 'property2',
    items: [
      {
        id: 0,
        name: 'x',
        isSelected: true
      },
      {
        id: 1,
        name: 'y',
        isSelected: false
      }
    ]
  }
]

我想在最后得到以下数组:

let filteredFilters = [
  {
    id: 0,
    name: 'property',
    items: [
      {
        id: 1,
        name: 'y',
        isSelected: true
      }
    ]
  },
  {
    id: 1,
    name: 'property2',
    items: [
      {
        id: 0,
        name: 'x',
        isSelected: true
      }
    ]
  }
]

我尝试了以下代码，但它不起作用。

let filteredFilters = filters.filter(filter => {
    return filter.items.filter(item => {
       return item.isSelected === true;
  })
})

Answer 1

您需要 map + filter因为您正在处理嵌套数组:

let filters = [
  {
    id: 0,
    name: 'property',
    items: [
      {
        id: 0,
        name: 'x',
        isSelected: false
      },
      {
        id: 1,
        name: 'y',
        isSelected: true
      }
    ]
  },
  {
    id: 1,
    name: 'property2',
    items: [
      {
        id: 0,
        name: 'x',
        isSelected: true
      },
      {
        id: 1,
        name: 'y',
        isSelected: false
      }
    ]
  }
]


let filteredFilters = 
    filters.map(
        ({items, ...rest}) => ({...rest, items: items.filter(item => item.isSelected)})
    )
    .filter(x => x.items.length > 0);

console.log(filteredFilters);