我正在寻找一种简单的方法来删除重复的对象数组 [重复]

Posted 2023-03-29

【中文标题】我正在寻找一种简单的方法来删除重复的对象数组 [重复]

【英文标题】：I'm looking for a simple methodology to remove duplicate array of object [duplicate]

【发布时间】：2021-11-03 07:14:32

【问题描述】：

输入：

const data=[
       id: 123, name: "dave", age: 23 , address:city:"chennai",
       id: 456, name: "chris", age: 23, address:city:"delhi",
       id: 789, name: "bob", age: 23, address:city:"",
       id: 789, name: "bob", age: 23, address:city:"mumbai",
       id: 555, name: "dave", age: 23 , address:city:"banglore"
       id: 101, name: "tom", age: 23, address:city:"jaipur" ,
       id: 101, name: "tom", age: 23, address:city:" " ,
       id: 102, name: "tim", age: 23, address:city:"kolkata"
    ]

根据 ID 值我需要删除重复的对象并覆盖地址键值

异常输出：

const data=[
       id: 123, name: "dave", age: 23 , address:city:"chennai",
       id: 456, name: "chris", age: 23, address:city:"delhi",
       id: 789, name: "bob", age: 23, address:city:"mumbai",
       id: 555, name: "dave", age: 23 , address:city:"banglore"
       id: 101, name: "tom", age: 23, address:city:"jaipur" ,
       id: 102, name: "tim", age: 23, address:city:"kolkata"
    ]

【问题讨论】：

您不想删除重复项，但也想合并。但是也有一些错误，例如address:city:"chennai" 这不是有效的语法。

【参考方案1】：

我会通过将其转换为字典然后再转换回数组来做到这一点。

const data = [
    id: 123,
    name: "dave",
    age: 23,
    "address:city": "chennai"
  ,
  
    id: 456,
    name: "chris",
    age: 23,
    "address:city": "delhi"
  ,
  
    id: 789,
    name: "bob",
    age: 23,
    "address:city": ""
  ,
  
    id: 789,
    name: "bob",
    age: 23,
    "address:city": "mumbai"
  ,
  
    id: 555,
    name: "dave",
    age: 23,
    "address:city": "banglore"
  , 
    id: 101,
    name: "tom",
    age: 23,
    "address:city": "jaipur"
  ,
  
    id: 101,
    name: "tom",
    age: 23,
    "address:city": " "
  ,
  
    id: 102,
    name: "tim",
    age: 23,
    "address:city": "kolkata"
  
];
const dataObj = ;
data.forEach(d => 
  if (!dataObj[d.id] || d['address:city'].length > dataObj[d.id]['address:city'].length) 
    dataObj[d.id] = d;
  
);
const dataWithoutDuplicates = Object.values(dataObj);
console.log(dataWithoutDuplicates);