#prototype-programming

Answer: how does Array.prototype.slice.call() work? #answer #fix #computers

how does Array.prototype.slice.call() work?

I know it is used to make arguments a real array, but I don’t understand what happens when using Array.prototype.slice.call(arguments)

Answer [by ThiefMaster]: how does Array.prototype.slice.call() work?

It uses the slice method arrays have and calls it with its this being the arguments object. This means it calls it as if you did arguments.slice()ass…

Solution: How does __proto__ differ from constructor.prototype? #answer #solution #fix

How does __proto__ differ from constructor.prototype?

function Gadget(name, color) { this.name = name; this.color = color; } Gadget.prototype.rating = 3 var newtoy = new Gadget("webcam", "black") newtoy.constructor.prototype.constructor.prototype.constructor.prototype

it will returns always the object with rating = 3

but if I do

newtoy.__proto__.__proto__.__proto__

here the chain end up with…

Solution: Benefits of prototypal inheritance over classical? #fix #programming #development

Benefits of prototypal inheritance over classical?

So I finally stopped dragging my feet all these years and decided to learn JavaScript “properly”. One of the most head-scratching elements of the languages design is it’s implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the life of me can’t figure out what benefits are to be…

How to: What does it mean that Javascript is a prototype based language?

What does it mean that Javascript is a prototype based language?

One of the major advantages with Javascript is said to be that it is a prototype based language.

But what does it mean that Javascript is prototype based, and why is that an advantage?

Answer: What does it mean that Javascript is a prototype based language?

Instead of declaring a class structure, you can create objects of the same…

How to: Adding hours to Javascript Date object?

Adding hours to Javascript Date object?

It amazes me that Javascript’s Date object does not implement an add function of any kind.

I simply want a function that can do this:

var now = Date.now(); var fourHoursLater = now.addHours(4); function Date.prototype.addHours(h) { // how do I implement this? }

I would simply like some pointers in a direction.

Do I need to do string parsing?

Can I use…

Fixed JavaScript: Class.method vs. Class.prototype.method #dev #it #asnwer

JavaScript: Class.method vs. Class.prototype.method

What is the difference between the following two declarations?

Class.method = function () { /* code */ } Class.prototype.method = function () { /* code using this.values */ }

Is it okay to think of the first statement as a declaration of a static method, and the second statement as a declaration of an instance method?

Answer: JavaScript:…

How to: Javascript: prototypal inheritance

Javascript: prototypal inheritance

I am new to JavaScript OOP. Can you please explain me what the difference is between the following blocks of code. I tested and both blocks work. What’s the best practice and why?

First block:

function Car(name){ this.Name = name; } Car.prototype.Drive = function(){ document.write("My name is " + this.Name + " and I'm driving. "); } SuperCar.prototype = new…

how does Array.prototype.slice.call() work?

I know it is used to make arguments a real array, but I don’t understand what happens when using Array.prototype.slice.call(arguments)

Answer: how does Array.prototype.slice.call() work?

It uses the slice method arrays have and calls it with its this being the arguments object. This means it calls it as if you did arguments.slice() assuming argumentsh…