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使用字符串?dāng)?shù)組過濾對象數(shù)組

使用字符串?dāng)?shù)組過濾對象數(shù)組

Smart貓小萌 2022-12-09 15:26:11
我想通過字符串?dāng)?shù)組過濾出對象數(shù)組let allUsers = [{  "avatar":null,  "deleted":false,  "_id":"5f1f5df967b3240004f50a36",  "email":"emailroom3@test.com",  "password":"$2a$10$5eKv6OVouPnPH.3g9STEYO990V.L14kpD2ImZ3AtZtHaRjCg4oj/6",  "fcm":"fcm3",  "createdAt":"2020-07-27T23:06:33.683Z",  "updatedAt":"2020-07-27T23:06:33.683Z",  "__v":0},{  "avatar":null,  "deleted":false,  "_id":"5f1f5e0067b3240004f50a37",  "email":"emailroom2@test.com",  "password":"$2a$10$czA2dASdEo1Dw0oAxw.y1eJwg4lrZW12tLE6sUeG5k.PThuineTIm",  "fcm":"fcm2",  "createdAt":"2020-07-27T23:06:40.702Z",  "updatedAt":"2020-07-27T23:06:40.702Z","__v":0},{  "avatar":null,  "deleted":false,  "_id":"5f1f5d9167b3240004f50a33",  "email":"emailroom1@test.com",  "password":"$2a$10$0O2aDCCSibWlNznIWfHTxuY8vNq4Sge/YDRuntKJl9UKnSI.9TEfC",  "fcm":"fcm1",  "createdAt":"2020-07-27T23:04:49.285Z",  "updatedAt":"2020-07-27T23:04:49.285Z",  "__v":0}]let connectedUsers = ['5f1f5df967b3240004f50a36','5f1f5e0067b3240004f50a37']輸出應(yīng)該是不在第二個(gè)數(shù)組中的第三個(gè)用戶：myArrayFiltered = [  {    "avatar":null,    "deleted":false,    "_id":"5f1f5d9167b3240004f50a33",    "email":"emailroom1@test.com",    "password":"$2a$10$0O2aDCCSibWlNznIWfHTxuY8vNq4Sge/YDRuntKJl9UKnSI.9TEfC",    "fcm":"fcm1",    "createdAt":"2020-07-27T23:04:49.285Z",    "updatedAt":"2020-07-27T23:04:49.285Z",    "__v":0  }]我試過了 let myArrayFiltered = allUsers.filter((user) => {    return connectedUsers.some((el) => {      return user._id !== el;    });  });但它返回所有 3 個(gè)用戶編輯：所有答案都返回第二個(gè)數(shù)組中的 2 個(gè)用戶，但我想要的是不是用戶，即 ID 為“5f1f5d9167b3240004f50a33”的用戶
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3 回答

?
侃侃無極

TA貢獻(xiàn)2051條經(jīng)驗(yàn) 獲得超10個(gè)贊

您不需要遍歷第二個(gè)數(shù)組。你只需要檢查它是否user._id在connectedUsers數(shù)組中。像這樣：


let allUsers = [{"avatar":null,"deleted":false,"_id":"5f1f5df967b3240004f50a36","email":"emailroom3@test.com","password":"$2a$10$5eKv6OVouPnPH.3g9STEYO990V.L14kpD2ImZ3AtZtHaRjCg4oj/6","fcm":"fcm3","createdAt":"2020-07-27T23:06:33.683Z","updatedAt":"2020-07-27T23:06:33.683Z","__v":0},{"avatar":null,"deleted":false,"_id":"5f1f5e0067b3240004f50a37","email":"emailroom2@test.com","password":"$2a$10$czA2dASdEo1Dw0oAxw.y1eJwg4lrZW12tLE6sUeG5k.PThuineTIm","fcm":"fcm2","createdAt":"2020-07-27T23:06:40.702Z","updatedAt":"2020-07-27T23:06:40.702Z","__v":0},{"avatar":null,"deleted":false,"_id":"5f1f5d9167b3240004f50a33","email":"emailroom1@test.com","password":"$2a$10$0O2aDCCSibWlNznIWfHTxuY8vNq4Sge/YDRuntKJl9UKnSI.9TEfC","fcm":"fcm1","createdAt":"2020-07-27T23:04:49.285Z","updatedAt":"2020-07-27T23:04:49.285Z","__v":0}];

let connectedUsers = ['5f1f5df967b3240004f50a36','5f1f5e0067b3240004f50a37'];

let myArrayFiltered = allUsers.filter(user => {

  return connectedUsers.includes(user._id);

});

console.log(myArrayFiltered);

  

// myArrayFiltered = [{"avatar":null,"deleted":false,"_id":"5f1f5d9167b3240004f50a33","email":"emailroom1@test.com","password":"$2a$10$0O2aDCCSibWlNznIWfHTxuY8vNq4Sge/YDRuntKJl9UKnSI.9TEfC","fcm":"fcm1","createdAt":"2020-07-27T23:04:49.285Z","updatedAt":"2020-07-27T23:04:49.285Z","__v":0}]



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?
慕的地6264312

TA貢獻(xiàn)1817條經(jīng)驗(yàn) 獲得超6個(gè)贊

您可以使用 indexOf 方法來檢查數(shù)組中的項(xiàng)目或不作為


let myArrayFiltered = allUsers.filter((user) => {

        return connectedUsers.indexOf(user._id) > -1;

      });

let allUsers = 

[{"avatar":null,"deleted":false,"_id":"5f1f5df967b3240004f50a36","email":"emailroom3@test.com","password":"$2a$10$5eKv6OVouPnPH.3g9STEYO990V.L14kpD2ImZ3AtZtHaRjCg4oj/6","fcm":"fcm3","createdAt":"2020-07-27T23:06:33.683Z","updatedAt":"2020-07-27T23:06:33.683Z","__v":0},{"avatar":null,"deleted":false,"_id":"5f1f5e0067b3240004f50a37","email":"emailroom2@test.com","password":"$2a$10$czA2dASdEo1Dw0oAxw.y1eJwg4lrZW12tLE6sUeG5k.PThuineTIm","fcm":"fcm2","createdAt":"2020-07-27T23:06:40.702Z","updatedAt":"2020-07-27T23:06:40.702Z","__v":0},{"avatar":null,"deleted":false,"_id":"5f1f5d9167b3240004f50a33","email":"emailroom1@test.com","password":"$2a$10$0O2aDCCSibWlNznIWfHTxuY8vNq4Sge/YDRuntKJl9UKnSI.9TEfC","fcm":"fcm1","createdAt":"2020-07-27T23:04:49.285Z","updatedAt":"2020-07-27T23:04:49.285Z","__v":0}]

 let connectedUsers = ['5f1f5df967b3240004f50a36','5f1f5e0067b3240004f50a37']

 

  let myArrayFiltered = allUsers.filter((user) => {

    return connectedUsers.indexOf(user._id) > -1;

  });

  

  console.log(myArrayFiltered)


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?
有只小跳蛙

TA貢獻(xiàn)1824條經(jīng)驗(yàn) 獲得超8個(gè)贊

在您的解決方案中，您正在檢查某些元素是否不等于用戶 ID，但您可能想檢查某些元素是否匹配它：


let myArrayFiltered = allUsers.filter((user) => {

  return connectedUsers.some((el) => {

    return user._id === el;

  });

});

這僅正確返回 2 個(gè)用戶。


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