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How To Remove Duplicates From a JavaScript Object

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@ashykAshok Kumar

Javascript developer

We can use the Set object to remove the duplicates from an array. The Set object lets you store unique values of any type, whether primitive values or object references. This property can be used to store only the objects that are unique in the array.

Here's an example:

const books = [
          { title: "C++", author: "Bjarne" },
          { title: "Java", author: "James" },
          { title: "C++", author: "Bjarne" },
          { title: "C++", author: "Bjarne" },
];              
const jsonObj = books.map(JSON.stringify);
const set = new Set(jsonObj);
const uniqueArray = Array.from(set).map(JSON.parse);
console.log(uniqueArray);
/*
[
   { title: "C++", author: "Bjarne" },
   { title: "Java", author: "James" },
]*/

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