JSFiddle - React, Tailwind, and code Playground

by Saurabh Khemka

HTML

Array.prototype.maps

JavaScript

Array.prototype.maps = function(callback){

console.log(this)
	var newArr = [];
  for(var i=0;i<this.length;i++) {
  	newArr.push(callback(this[i]))
  }
	return newArr;
}

const array3 = [11, 4, 19, 16];

// pass a function to map
const map3 = array3.maps(x => x * 2);

console.log(map3)