Difference Between __proto__ and prototype in Javascript

We will learn what is the difference between proto and prototype in Javascript

__proto__ is the actual object that is used in the lookup chain to resolve methods, etc.

prototype is the object that is used to build __proto__ when you create an object with new:

( new Foo ).__proto__ === Foo.prototype;
( new Foo ).prototype === undefined;

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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

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.

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.

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What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");
</script>

How to comment JavaScript code?

• For single line comment in JavaScript we have to use // (double slashes)
• For multiple line comments we have to use / * – – * /

<script type="text/javascript">

//single line comment

/* document.write("Hello"); */

</script>

Advantages and Disadvantages of JavaScript

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Hire Dedicated JavaScript Developers -Hire JavaScript Developers

It is said that a digital resource a business has must be interactive in nature, so the website or the business app should be interactive. How do you make the app interactive? With the use of JavaScript.

Does your business need an interactive website or app?

Hire Dedicated JavaScript Developer from WebClues Infotech as the developer we offer is highly skilled and expert in what they do. Our developers are collaborative in nature and work with complete transparency with the customers.

The technology used to develop the overall app by the developers from WebClues Infotech is at par with the latest available technology.

Get your business app with JavaScript

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Book Free Interview: https://bit.ly/3dDShFg

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The essential JavaScript concepts that you should understand

As a JavaScript developer of any level, you need to understand its foundational concepts and some of the new ideas that help us developing code. In this article, we are going to review 16 basic concepts. So without further ado, let’s get to it.

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