Ways to extend Array object in javascript

Question

i try to extend Array object in javascript with some user friendly methods like Array.Add() instead Array.push() etc...

i implement 3 ways to do this. unfortunetly t

Answer 1

You can also use this way in ES6:

Object.assign(Array.prototype, {
    unique() {
      return this.filter((value, index, array) => {
        return array.indexOf(value) === index;
      });
    }
});

Result:

let x = [0,1,2,3,2,3];
let y = x.unique();
console.log(y); // => [0,1,2,3]