How to remove duplicate object in an array of objects in JavaScript

Question

I'd like to remove duplicate object. How can I do this?

const array1 = [{ currencyName : "USD", code: "121" }, 
                { currencyName : "INR", code: "123" }];

const array2 = [{ currencyName : "USD", code: "121" }];

Result = [{ currencyName : "INR", code: "121" }]

Possible duplicate of Remove duplicates from an array of objects in JavaScript also 1 2 3 — ggorlen
– ggorlen, Commented Oct 22, 2019 at 15:20

StepUp · Accepted Answer · 2019-10-22 15:21:34Z

0

Try to use filter and some methods:

const array1 =[ 
    { currencyName : "USD", code: "121" }, 
    { currencyName : "INR", code: "123" }
]

const array2=[ { currencyName : "USD", code: "121" }];

const result = array1.filter(f=> 
    !array2.some(s=> f.code === s.code && f.currencyName === s.currencyName)
);

console.log(result)

answered Oct 22, 2019 at 15:21

StepUp

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Comments

junvar · Accepted Answer · 2019-10-22 15:22:02Z

0

const array1 = [{
  currencyName: "USD",
  code: "121"
}, {
  currencyName: "INR",
  code: "123"
}, ]

const array2 = [{
  currencyName: "USD",
  code: "121"
}, {
  currencyName: "FRA",
  code: "122"
}]

let array1Uniques = array1.filter(a => !array2.some(b => b.code === a.code));
let array2Uniques = array2.filter(a => !array1.some(b => b.code === a.code));
let result = [...array1Uniques,  ...array2Uniques];
console.log(result);

answered Oct 22, 2019 at 15:22

junvar

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