myFilter function.js

/*It would teach us a lot about the filter method if we try to implement a version of it that behaves exactly like Array.prototype.filter(). It can use either a for loop or Array.prototype.forEach().

Note: A pure function is allowed to alter local variables defined within its scope, although, it's preferable to avoid that as well.


Write your own Array.prototype.myFilter(), which should behave exactly like Array.prototype.filter(). You may use a for loop or the Array.prototype.forEach() method.*/
var s = [23, 65, 98, 5];
Array.prototype.myFilter = function(callback){
  var newArray = [];   
  this.forEach(function(x){if(callback(x)==true){newArray.push(x)}})  
  return newArray;
};

var new_s = s.myFilter(function(item){
  return item % 2 === 1;
});

console.log(new_s);