JavaScript Get Unique Values From Array
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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