Removing array dublicates in ES6
Here are 4 ways to filter out duplicates from an array and return only the unique values.
Setis one of the cool thing happening in ES6. It's a new data structure that store unique values of any type. You can iterate through the elements of a set in insertion order. A value in the
Setmay only occur once; it is unique in the Set's collection.
filter()method creates a new array with all elements that pass the test implemented by the provided function.
In order to understand this option, let's understand what these two methods are doing:
reduce()method executes a reducer function (that you provide) on each member of the array resulting in a single output value.
includes()method determines whether an array includes a certain value among its entries, returning true or false as appropriate.