Implement map on a Prototype - Unable to multiply value

JavaScript
1

Tell us what’s happening:

I can’t seem to be able to multiply the values of the array by two. what am I missing? can someone please help me with this?

Your code so far


// the global Array
var s = [23, 65, 98, 5];

Array.prototype.myMap = function(callback){
  var newArray = [];
  // Add your code below this line
  this.forEach( (elem) => newArray.push(elem) )
  // Add your code above this line
  return newArray;

};

var new_s = s.myMap(function(item){
  return item * 2;
});
console.log(new_s)

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/functional-programming/implement-map-on-a-prototype

2

Yeah this one is a little tricky.

You need to call the callback inside the Array.prototype.myMap function, passing it each of the array elements as an argument. Push the callback’s return values into the array.

3

Oh! it worked! thank you! I figured my mistake. thanks,

4