javascript - 根据其嵌套数组值过滤数组

Question

我有一系列结果。我想将结果过滤到一个数组中，该数组的 category 至少有一个 cat_id 为 1 的对象。我该怎么做？

"results": [
  {
    "product_id": 1,
    "title": "booking",
    "draft": false,
    "publish": true,
    "category": [
      {
        "cat_id": 1,
        "cat_name": "web",
        "product": "booking"
      }
    ],
  },
  {
    "product_id": 2,
    "title": "reading",
    "draft": false,
    "publish": true,
    "category": [
      {
        "cat_id": 6,
        "cat_name": "android",
        "product": "asdasd"
      }
    ],
  },
  {
    "product_id": 3,
    "title": "reading",
    "draft": false,
    "publish": true,
    "category": [],
  },
]

我的尝试:

for (let i = 0; i < data.results.length; i++) {
  this.webCatProducts = data.results[i].category.filter(d => d.cat_id == 1)
  console.log(this.webCatProducts)
}

Answer 1

在 .filter 中使用 .some 检查是否有任何 category 对象具有匹配的 cat_id:

const results=[{"product_id":1,"title":"booking","draft":!1,"publish":!0,"category":[{"cat_id":1,"cat_name":"web","product":"booking"}],},{"product_id":2,"title":"reading","draft":!1,"publish":!0,"category":[{"cat_id":6,"cat_name":"android","product":"asdasd"}],},{"product_id":3,"title":"reading","draft":!1,"publish":!0,"category":[],},];
const filtered = results.filter(
  ({ category }) => category.some(({ cat_id }) => cat_id === 1)
);
console.log(filtered);