Bobbie  Harvey

Bobbie Harvey

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Frontend Day 11 - Prototypal Inheritance | Introduction to Javascript

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Assignment

https://drive.google.com/file/d/1Uw71fhhR65Yh3NQlK6cVEJo5BmLX6_r8/view?usp=sharing

github repo link : https://github.com/devs-nest/Algo-101

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Frontend Day 11 - Prototypal Inheritance | Introduction to Javascript

JavaScript Prototypes. It Doesn't Have to Be Complicated.

It’s hard to skip prototypes (or the prototype chain or prototypal inheritance) if you want to dive deeper into JS development (Not only pure JS, but also Node.js, Frameworks like Vue.js, React.js, Angular,…).

If you are like me a few years ago and get some serious headache each time you have to deal with prototypes in JavaScript, this will probably be THE article you were looking for to get your head wrapped around the principle of prototypes in JS.

From the  MDN documentation (don’t be scared, we’ll clarify everything below):

When it comes to inheritance, JavaScript only has one construct: objects. Each object has a private property (referred to as [[Prototype]]) which holds a link to another object called its prototype. That prototype object has a prototype of its own, and so on until an object is reached with null as its prototype. By definition, null has no prototype, and acts as the final link in this prototype chain.

Private [[Prototype]] property

Refer back to the below illustration whenever you feel the need, it might help you to wrap your head around this concept easier.

Prototype chain

So let’s start from the base. Every object in JavaScript has a private [[Prototype]] prototype, which holds a reference to another object (or null). This means, that our new object will have access to methods and properties of that referenced object.

#javascript #prototypes #prototypal inheritance #prototype chain

Madilyn  Kihn

Madilyn Kihn

1591242495

Prototypal Inheritance — The second pillar of Javascript

All you need to know about Prototypal Inheritance — The second pillar of Javascript
What we will learn here will help us understand Object-oriented programming(OOP).

#javascript #prototyping #prototype #prototype-chain #js

Introduction With Basic JavaScript

The world’s most misunderstood programming language is JavaScript but JavaScript is now used by an incredible number of high-profile applications. So, it’s an important skill for any web or mobile developer to enrich the deeper knowledge in it.

Unlike most programming languages, the JavaScript language has no concept of input or output. It is designed to run as a scripting language in a host environment, and it is up to the host environment to provide mechanisms for communicating with the outside world.

Its syntax is based on the Java and C languages — many structures from those languages apply to JavaScript as well. JavaScript supports object-oriented programming with object prototypes, instead of classes. JavaScript also supports functional programming — because they are objects, functions may be stored in variables and passed around like any other object.

Let’s start off by looking at the building blocks of any language: the types. JavaScript programs manipulate values, and those values all belong to a type. JavaScript’s types are:

· Number

· String

· Boolean

· Function

· Object

· Symbol

and undefined and null, which are … slightly odd. And Array, which is a special kind of object. Date and RegExp, which are objects that you get for free. And to be technically accurate, functions are just a special type of object. So the type of diagram looks like this:

#beginner-javascript #javascript #javascript-introduction #javascript-fundamental #basic-javascritp

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