How to create a list of unique items in JavaScript?

Question

In my CouchDB reduce function I need to reduce a list of items to the unique ones.

Note: In that case it\'s ok to have a list, it will be a small number of items

Answer 1

The best method seem to be using ES6 and Set. Single line and faster* than above according to fiddle

    
const myList = [1,4,5,1,2,4,5,6,7];
const unique = [...new Set(myList)];
    
console.log(unique);

*tested in safari