如何过滤数组中哪些元素具有嵌套数组？

Question

我试图找到能够过滤属性中包含另一个数组的数组的逻辑。见下文：let filterValue = 'berries'; const products = [    {        id: 1,        productName: 'Strawberry Basil',        productImgURL:            'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/Cherry_Pop_Still_4K_Front-CherryPop.png?v=1588713373',        type: ['berry', 'citrusy', 'fancy'],        price: 5.5,    },    {        id: 2,        productName: 'Sour Blueberry',        productImgURL:            'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/SourBlueBerry_Still_4K_Front-SourBlueberry.png?v=1588713584',        type: ['all', 'sour', 'berry'],        price: 4,    },    {        id: 3,        productName: 'Blackberry Jam',        productImgURL:            'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/BlackBerry_Jam_Still_4K_Front-BlackberryJam.png?v=1595035965',        type: ['all', 'berry'],        price: 10,    },    {        id: 4,        productName: 'Orange Nectarine',        productImgURL:            'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/Orange_Nectarine_Still_4K_Front-OrangeNectarine.png?v=1588713522',        type: ['all', 'Citrus', 'fancy', 'juicy'],        price: 6,    },    {        id: 5,        productName: 'Lemon Verbena',        productImgURL:            'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/Lemon_Verbena_Still_4K_Front-LemonVerbena.png?v=1588713474',        type: ['all', 'Citrus', 'classic', 'floral'],        price: 4.5,    },    {        id: 6,        productName: 'Extra Peach',        productImgURL:            'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/ExtraPeach_Still_4K_Front-ExtraPeach.png?v=1588713411',        type: ['Juicy'],        price: 8.5,    },];正如您在上面看到的，我想过滤数组并仅显示那些在类型中包含过滤器 val 的产品。我已经尝试过，但我的解决方案真的很长。

Answer 1

const filteredProducts = products.filter(p => p.type.includes(type));

.filter您可以在外部数组和.includes内部数组上使用来执行您要查找的操作。

根据记录，“berry”从未出现在任何“type”数组中，但“berry”却出现在

Answer 2

您可以使用Array.prototype.filter()withArray.prototype.some()来获取过滤结果。如果数组中至少有一个元素通过给定回调函数的测试，则 some() 方法返回 true。

const filterValue = 'berry';

const products = [

  {

    id: 1,

    productName: 'Strawberry Basil',

    productImgURL:

      'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/Cherry_Pop_Still_4K_Front-CherryPop.png?v=1588713373',

    type: ['berry', 'citrusy', 'fancy'],

    price: 5.5,

  },

  {

    id: 2,

    productName: 'Sour Blueberry',

    productImgURL:

      'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/SourBlueBerry_Still_4K_Front-SourBlueberry.png?v=1588713584',

    type: ['all', 'sour', 'berry'],

    price: 4,

  },

  {

    id: 3,

    productName: 'Blackberry Jam',

    productImgURL:

      'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/BlackBerry_Jam_Still_4K_Front-BlackberryJam.png?v=1595035965',

    type: ['all', 'berry'],

    price: 10,

  },

  {

    id: 4,

    productName: 'Orange Nectarine',

    productImgURL:

      'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/Orange_Nectarine_Still_4K_Front-OrangeNectarine.png?v=1588713522',

    type: ['all', 'Citrus', 'fancy', 'juicy'],

    price: 6,

  },

  {

    id: 5,

    productName: 'Lemon Verbena',

    productImgURL:

      'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/Lemon_Verbena_Still_4K_Front-LemonVerbena.png?v=1588713474',

    type: ['all', 'Citrus', 'classic', 'floral'],

    price: 4.5,

  },

  {

    id: 6,

    productName: 'Extra Peach',

    productImgURL:

      'https://cdn.shopify.com/s/files/1/0274/3641/7123/products/ExtraPeach_Still_4K_Front-ExtraPeach.png?v=1588713411',

    type: ['Juicy'],

    price: 8.5,

  },

];

const ret = products.filter(({ type }) =>

  type.some((x) => x.toLowerCase() === filterValue.toLowerCase())

);

console.log(ret);