Erfan

Array.prototype.forEach = function(callback) { for (var i = 0; i < this.length; i++) callback(this[i], i, this); }; why the this keyword is set to the array protot...

hi why does js returns undefined in the absence of return statement in a void function? for example something like this: console.log(console.log()) // undefined

hi everyone what apps do you use to take notes?