In this code
var s = [23, 65, 98, 5];
Array.prototype.myMap = function(callback) {
var newArray = [];
// Add your code below this line
for (let i = 0; i < this.length; i++) {
newArray.push(callback(this[i]));
}
// Add your code above this line
return newArray;
};
var new_s = s.myMap(function(item) {
return item * 2;
});
What is this.length?
Thanks,
Andrej