Question

我有这个数组：

[
  {
    "active": true,
    "name": "agency one"
  },
  {
    "active": false,
    "name": "agency two"
  },
  {
    "active": true,
    "name": "agency three"
  },
  {
    "active": false,
    "name": "agency four"
  }
]

还有一些类似的数据：

{
    "domain": "agency one",
    "url": "https://....",
    "title": "some title",
    "img": "https://.....jpg",
    "tag": "some tag",
}

如何检查代理是否处于活动状态？

Answer 1

假设变量agencies保存帖子中包含的数组：

const activeAgencies = agencies.filter(agency => {
    return agency.active === true
  })

然后activeAgencies将是一个仅包含标记为活动的代理对象的新数组。

Answer 2

您可以使用以下方法：

.find（）

.filter（）

.findIndex（）

const firstActiveAgency = arr.find(item => item.active);

const allActiveAgencies = arr.filter(item => item.active);

Answer 3

使用.filter（）

console.log(array.filter(items => {
  return items.active === true
//should return every "active that is set to true"
}))

Answer 4

问题的最终答案：

let agenciesList = 
[
  {
    "active": true,
    "name": "agency one"
  },
  {
    "active": false,
    "name": "agency two"
  },
  {
    "active": true,
    "name": "agency three"
  },
  {
    "active": false,
    "name": "agency four"
  }
];

let allActiveAgencies = agenciesList.filter(item => item.active);

let newArray = allActiveAgencies.map(item => item.name);

console.log(newArray); // ["agency one","agency three"]
console.log(newArray.includes("agency one")); // true

JavaScript：如何检查数组对象是否包含特定值

4 个答案: