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find duplicate objects in array js

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eje sunday answered on November 17, 2020 Popularity 1/10 Helpfulness 1/10

answer find duplicate objects in array js

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find duplicate objects in array js

Comment

let arr = []
arr.push({place:"here",name:"stuff"});
arr.push({place:"there",name:"morestuff"});
arr.push({place:"there",name:"morestuff"});


arr = arr.filter((value, index, self) =>
                 // return if the index if the matched innerr iteration matches the index of the outer iterator
  index === self.findIndex((t) => (
    t.place === value.place && t.name === value.name
  ))
)

Popularity 1/10 Helpfulness 1/10 Language typescript

Source: stackoverflow.com

Tags: find typescript

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Contributed on Apr 20 2022

eje sunday

0 Answers Avg Quality 2/10

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how to find duplicate item in array of object in javascript

Comment

const values = [
  { name: 'someName1' },
  { name: 'someName2' },
  { name: 'someName3' },
  { name: 'someName1' }
]

const uniqueValues = new Set(values.map(v => v.name));

if (uniqueValues.size < values.length) {
  console.log('uniqueValues')
}

Popularity 10/10 Helpfulness 8/10 Language javascript

Source: stackoverflow.com

Tags: find

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Contributed on Dec 10 2020

Sore Sloth

0 Answers Avg Quality 2/10

find duplicate values in array object javascript

Comment

const values = [{id: 10, name: 'someName1'}, {id: 10, name: 'someName2'}, {id: 11, name:'someName3'}, {id: 12, name: 'someName4'}];

const lookup = values.reduce((a, e) => {
  a[e.id] = ++a[e.id] || 0;
  return a;
}, {});

console.log(values.filter(e => lookup[e.id]));
 Run code snippetHide results

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: stackoverflow.com

Tags: find

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Contributed on Feb 19 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

js check if array of objects contains duplicates

Comment

const arrayOfObjCopy = [...arrayOfObj];

Object.keys(arrayOfObjCopy).forEach((key) => {
  arrayOfObjCopy[key] = JSON.stringify(arrayOfObjCopy[key]);
 });

const arrayOfObjhasDuplicates = uniq(arrayOfObjCopy).length != arrayOfObjCopy.length;

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: contains contain

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Contributed on Nov 17 2020

Ugliest Unicorn

0 Answers Avg Quality 2/10

find duplicate values in array object javascript

Comment

duplicateIds = arr
     .map(e => e['id'])
     .map((e, i, final) => final.indexOf(e) !== i && i)
     .filter(obj=> arr[obj])
     .map(e => arr[e]["id"])

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: find

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Contributed on Feb 19 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

find duplicate objects in array js

Comment

let arr = []
arr.push({place:"here",name:"stuff"});
arr.push({place:"there",name:"morestuff"});
arr.push({place:"there",name:"morestuff"});


arr = arr.filter((value, index, self) =>
// return if the index if the matched innerr iteration matches the index of the outer iterator
  index === self.findIndex((t) => (
    t.place === value.place && t.name === value.name
  ))
)

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: find javascript

Link to this answer
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Contributed on Apr 20 2022

eje sunday

0 Answers Avg Quality 2/10

find duplicate objects in array js

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find duplicate objects in array js

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how to find duplicate item in array of object in javascript

find duplicate values in array object javascript

js check if array of objects contains duplicates

find duplicate values in array object javascript

find duplicate objects in array js

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