remove duplicates from array in javascript | algorithm interview question In हिंदी
In this video, I will show you 6 different ways to remove duplicate elements from the array by using the for, indexOf, filter, for each, set, reduce, and prototype method.
I have also used spread operator, push, indexOf and includes methods to remove duplicate elements from an array.
1. for loop with indexOf method in javascript. The indexOf() method returns the index of the first occurrence of an element in an array.
2. forEach method. Remove duplicates from an array using forEach() and include() .
The include() returns true if an element is in an array or false if it is not.
3. filter method. The filter() method creates a new array of elements that pass the condition we provide. It will include only those elements for which true is returned. We can remove duplicate values from the array by simply adjusting our condition.
4. Set method es6. This method sets a new object type with ES6 (ES2015) that allows you to create collections of unique values.
5. Reduce method . The reduce() method is used to reduce the elements of the array and combine them into a final array based on some reducer function that you pass
6. Prototype method. Adding a unique Method to the Array Prototype and used to this .
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