JavaScript Get Unique Values From Array

Publié le: 10 décembre 2023
sur la chaîne: Tuts Make
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Arrays in JavaScript often contain duplicate values, and there are various methods to extract/get/find all the unique elements/values. In this tutorial, we'll explore different approaches to achieve this.


Method 1: Using the filter() method
Method 2: Using the Set() method
Method 3: Using the reduce() method

Method 1: Using the filter() method

The filter method creates a new array by including only the first occurrence of each element. It checks whether the current element's index is the same as the first occurrence's index, effectively removing duplicates.

Method 2: Using the Set() method

The Set object in JavaScript allows you to store unique values. By converting the array into a Set and then spreading it back into an array, you effectively eliminate duplicate values.

Method 3: Using reduce() methods

The reduce method accumulates unique values by checking if the current element is already present in the accumulator array.

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