javascript - 使用条件语句过滤对象数组

Question

我有具有以下结构的 JavaScript 对象数组：

const fruits =       [{
                        "id": "1",
                        "title": "Banana",
                        "description": "1 Minute"
                    },
                    {
                        "id": "2",
                        "title": "Apple",
                        "description": "2 - 3 Days"
                    },
                    {
                        "id": "3",
                        "title": "Manggo",
                        "description": "10 - 20 Days"
                    },
                    {
                        "id": "4",
                        "title": "Orange",
                        "description": "10 - 20 Days"
                    },
                    {
                        "id": "5",
                        "title": "Grape blue",
                        "description": "10 - 20 Days"
                    },
                    {
                        "id": "6",
                        "title": "Grape red",
                        "description": "10 - 20 Days"
                    }]

我想提取具有description=“10 - 20 天”title 且不包含“葡萄”的对象

那么我的预期应该是

                    {
                        "id": "3",
                        "title": "Manggo",
                        "description": "10 - 20 Days"
                    },
                    {
                        "id": "4",
                        "title": "Orange",
                        "description": "10 - 20 Days"
                    }

标签： javascriptarraysjavascript-objects

Answer 1

这很简单，使用Array.protoype.filter. 在filter回调中，您可以使用String.protoype.includes方法检查标题是否包含"grapes"：

const fruits = [{
    "id": "1",
    "title": "Banana",
    "description": "1 Minute"
  },
  {
    "id": "2",
    "title": "Apple",
    "description": "2 - 3 Days"
  },
  {
    "id": "3",
    "title": "Manggo",
    "description": "10 - 20 Days"
  },
  {
    "id": "4",
    "title": "Orange",
    "description": "10 - 20 Days"
  },
  {
    "id": "5",
    "title": "Grape blue",
    "description": "10 - 20 Days"
  },
  {
    "id": "6",
    "title": "Grape red",
    "description": "10 - 20 Days"
  }
];

const filteredFruits = fruits.filter(fruit => {
  if (!fruit.title.toLowerCase().includes("grape")) {
    if (fruit.description === "10 - 20 Days") {
      return true;
    }
  }

  return false;
});

console.dir(filteredFruits)