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Duplicate removes from Array of Objects

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Aamir Farooq answered on January 2, 2020 Popularity 9/10 Helpfulness 2/10

answer Duplicate removes from Array of Objects

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Duplicate removes from Array of Objects

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let key="orderNumber";
[...new Map(this.GetDropsMapAddress.drops.map(item =>[item[key], item])).values()];

Popularity 9/10 Helpfulness 2/10 Language typescript

Source: angular.io

Tags: typescript

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Contributed on Jul 19 2022

Aamir Farooq

0 Answers Avg Quality 2/10

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remove duplicates from array of objects javascript

Comment

let arr = [{name: "john"}, {name: "jane"}, {name: "imelda"}, {name: "john"}];

const uniqueArray = arr.filter((v,i,a)=>a.findIndex(t=>(t.name===v.name))===i)
console.log(uniqueArray);

Popularity 10/10 Helpfulness 7/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jun 21 2021

Light Lobster

0 Answers Avg Quality 2/10

remove duplicate objects from array javascript

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const addresses = [...]; // Some array I got from async call

const uniqueAddresses = Array.from(new Set(addresses.map(a => a.id)))
 .map(id => {
   return addresses.find(a => a.id === id)
 })

Popularity 10/10 Helpfulness 7/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jan 02 2020

Ornate Rock Dragon

0 Answers Avg Quality 2/10

remove duplicates objects from an array of objects using javascript

Comment

// remove duplicates objects from an array of objects using javascript
let arr = [
  {id: 1, name: 'Chetan'},
  {id: 1, name: 'Chetan'},
  {id: 2, name: 'Ujesh'},
  {id: 2, name: 'Ujesh'},
];
let jsonArray = arr.map(JSON.stringify);
console.log(jsonArray); 
/* 
[
  '{"id":1,"name":"Chetan"}',
  '{"id":1,"name":"Chetan"}',
  '{"id":2,"name":"Ujesh"}',
  '{"id":2,"name":"Ujesh"}'
]
*/

let uniqueArray = [...new Set(jsonArray)].map(JSON.parse);
console.log(uniqueArray);
/* 
[ { id: 1, name: 'Chetan' }, { id: 2, name: 'Ujesh' } ]
*/

Popularity 8/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Nov 09 2022

Chetan Nada

0 Answers Avg Quality 2/10

remove duplicate object from array javascript

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const uniqify = (array, key) => array.reduce((prev, curr) => prev.find(a => a[key] === curr[key]) ? prev : prev.push(curr) && prev, []);

Popularity 9/10 Helpfulness 6/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Aug 04 2021

Average Alligator

0 Answers Avg Quality 2/10

how to remove duplicate values in array of objects using javascript

Comment

const array = [{id: 1, name: "hello"}, {id: 2, name: "hii"}, {id: 1, name: "hey"} ]; 
const cleanArray = array.reduce((unique, o) => {
        if(!unique.some(obj => obj.id === o.id)) {
          unique.push(o);
        } 
        return unique;
    },[]);

Popularity 9/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Mar 14 2022

Himanshu Makwana

0 Answers Avg Quality 2/10

remove duplicates from array of objects

Comment

const arr = [
  { id: 1, name: "test1" },
  { id: 2, name: "test2" },
  { id: 2, name: "test3" },
  { id: 3, name: "test4" },
  { id: 4, name: "test5" },
  { id: 5, name: "test6" },
  { id: 5, name: "test7" },
  { id: 6, name: "test8" }
];

const filteredArr = arr.reduce((acc, current) => {
  const x = acc.find(item => item.id === current.id);
  if (!x) {
    return acc.concat([current]);
  } else {
    return acc;
  }
}, []);

Popularity 9/10 Helpfulness 5/10 Language javascript

Source: dev.to

Tags: javascript j

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Contributed on Aug 08 2022

allan asirraj

0 Answers Avg Quality 2/10

duplicate value removed in array of object in javascript

Comment

const arr = [{id: 1, name: 'one', position: 1}, {id: 2, name: 'two', position: 2}, {id: 1, name: 'one', position: 3}]

const ids = arr.map(o => o.id)
const filtered = arr.filter(({id}, index) => !ids.includes(id, index + 1))
console.log(filtered,'filtered')

const uniqueArray = arr.filter((v, i, a) => a.findIndex(t => (t.name === v.name)) == i)
console.log(uniqueArray,'uniqueArray');

Popularity 9/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Mar 30 2022

$uj@y

0 Answers Avg Quality 2/10

remove duplicates objects from array javascript

Comment

arr.reduce((acc, current) => {
  const x = acc.find(item => item.id === current.id);
  if (!x) {
    return acc.concat([current]);
  } else {
    return acc;
  }
}, []);

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Nov 09 2020

Awful Antelope

0 Answers Avg Quality 2/10

how to remove duplicate object in array javascript

Comment

arr.filter((v,i,a)=>a.findIndex(t=>(t.place === v.place && t.name===v.name))===i)

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Aug 18 2021

Nutty Narwhal

0 Answers Avg Quality 2/10

How to remove all duplicates from an array of objects

Comment

obj.arr = obj.arr.filter((value, index, self) =>
  index === self.findIndex((t) => (
    t.place === value.place && t.name === value.name
  ))
)

Popularity 9/10 Helpfulness 3/10 Language whatever

Source: stackoverflow.com

Tags: whatever whateve

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Contributed on Sep 20 2022

Happy Hamerkop

0 Answers Avg Quality 2/10

Duplicate removes from Array of Objects

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How to remove all duplicates from an array of objects

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