CODEWITHSUNDEEP
arraysjsonnode.js
User09111993
User09111993

Reputation: 176

How to remove duplicate values from a json array using node js?

I have my json Array input like this :-

var temp =  [{first: 569, second: "789", third: "458"},  {first: value1, 476: "147", third: "369"},  {first: 100, second: "200", third: "300"},  {first: 100, second: "200", third: "300"},   {first: 100, second: "200", third: "300"}];

I want to remove duplicates from this and need an output like :

var temp =  [{first: 569, second: "789", third: "458"},  {first: value1, 476: "147", third: "369"},  {first: 100, second: "200", third: "300"}];

How can i achieve this ?

Upvotes: 0

Views: 4408

Answers (1)

Hassan Imam
Hassan Imam

Reputation: 22524

You can use array#map and JSON.stringify to create string from object and then use Set to get all unique string and then convert back to object using array#map and JSON.parse().

Following proposal won't work if the data type isn't JSON.

const temp =  [{first: 569, second: "789", third: "458"},  {first: 476, second : "147", third: "369"},  {first: 100, second: "200", third: "300"},  {first: 100, second: "200", third: "300"},   {first: 100, second: "200", third: "300"}];

const result = [...new Set(temp.map(obj => JSON.stringify(obj)))]
                 .map(str => JSON.parse(str));
console.log(result);
.as-console-wrapper { max-height: 100% !important; top: 0; }

Upvotes: 3

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