How to use filter() and reduce() In Javascript
Using filter() to get unique elements, then reduce() to find the most frequent one by comparing filtered counts. This method efficiently determines the most frequent element in an array.
Example:
const array = [1, 2, 3, 2, 2, 3, 1, 4, 2];
const mostFrequent = Array.from(new Set(array)).reduce((prev, curr) =>
array.filter(el => el === curr).length > array.filter(el => el === prev).length ? curr : prev
);
console.log(mostFrequent);
Output
2
Most Frequent Element in an Array using JavaScript
We will demonstrate different methods to find the most frequent element in an array in JavaScript. We will be given an array with multiple occurrences of values in that array and we have to output the maximum occurred element in that array.