This document provides an overview of several top JavaScript frameworks including AngularJS, ReactJS, Vue.js, Node.js, and Backbone.js, highlighting their key features and usage in web development. Each framework has unique attributes such as two-way data binding in AngularJS, virtual DOM in React, and adaptability in Vue.js. The conclusion emphasizes the challenge of selecting the right framework and aims to assist readers in making informed decisions based on their needs.

1. JAVASCRIPT
FRAMEWORKS
AN OVERVIEW OF BEST JS FRAMEWORKS

2. TOP JAVASCRIPT FRAMEWORKS

3. 1. AngularJS:
One of the most powerful, efficient, and open-source JavaScript
frameworks is Angular. It’s impossible to not mention Angular in my
Top JavaScript Frameworks list. This framework is operated by the
Google and is used for developing Single Page Application (SPA). This
development framework is known primarily because it gives
developers the best conditions for combining JavaScript with HTML
and CSS. Over half a million websites like google.com, youtube.com,
etc. are using Angular.

4. AngularJS: Key Features

5. Key Features:
• MVC architecture: One of the most important features of AngularJS
is the MVC or Model-View-Controller architecture. The MVC
architecture is divided into three elements, i.e., the Model, View
and Controller.
• 2way binding: This is an amazing feature that sets AngularJS apart
from other JavaScript frameworks. Angular Data-Binding builds a
link between model and view. In a two-way data binding process,
the View displays changes made in the Model and, the Model
reflects changes made in the View.

6. Key Features:
• Single page app: With AngularJS framework, you can build fully
responsive single page apps that can easily fit different screen sizes
perfectly. Plus, these apps are also capable of offering an improved
user experience as compared to other web apps. Since the
AngularJS-based single page apps are rendered on the client side,
they reduce the network traffic by decreasing the load on the web
sever
• HTML UI: Another great feature of AngularJS is the fact that it uses
the HTML language to build user interfaces. The HTML language is a
common and declarative language with very short tags that are
simple to understand. This leads to a more organized and simplistic
UI. JavaScript interfaces are often more complicated to develop and
organize. If you’re looking for a solution that’s quick, simple, and
easy to use at a moment’s notice, then this could be it.

7. 2. ReactJS:
React is another JavaScript library maintained by Facebook for
building interactive and complex UI. It is one of the most trending
frameworks with over 3 lakh websites implementing React in their UI.
To name a few websites, we have Microsoft.com, yahoo.com and so
on.React is responsible for popularizing functional programming
principles among a new generation of developers. Although not a
purely functional library, it allows developers to work in a largely
functional style, particularly when combined with Redux.

8. ReactJS: Key Features

9. Key Features:
• Virtual DOM: In React, for every DOM object, there is a
corresponding “virtual DOM object.” A virtual DOM object is a
representation of a DOM object, it creates a virtual copy of the
original DOM. It’s a one-way data binding hence manipulating the
virtual DOM is quick rather than updating the original DOM
because nothing gets drawn onscreen.
• JSX: Instead of the usual JavaScript that’s used for templating, React
utilizes JSX, a simple JavaScript that uses HTML quoting. You can
also use HTML syntax to render subcomponents, or write in good
old-fashioned JavaScript, meaning you have flexibility as you code,
either way.

10. Key Features:
• Unidirectional data flow: React.js is designed in such a manner that
it will only support data that is flowing downstream, in one flow. If
the data has to flow in another direction, you will need additional
features.
• Components: In React everything is treated as components, thus
you can easily import component supported by React, instead of
coding or building an entire feature you can import it and make use
of it.

11. 3. VUE.JS:
Vue is an open source JavaScript framework for building creative UI.
Integrating into projects that use other JavaScript libraries is
simplified with Vue because it is designed to be adaptable. Currently,
over 36,000 websites are using Vue. Companies like stackoverflow,
playstation, etc. are relying on Vue for their websites UI. One notable
feature of Vue is that it's a "progressive framework" and can be used
as a jQuery replacement as well as for large single page applications.
Vue's relative simplicity, developer experience, and good performance
have contributed to a huge surge in its popularity.

12. VUE.JS: Key Features

13. Key Features:
• Template: Vue.js offers HTML-based templates that bind the DOM
with the Vue.js instance data. Vue.js compiles the templates into
virtual DOM Render functions. A web developer can use template
of the render functions and can replace the template with the
render function.
• Small in size: The success of JavaScript framework depends on its
size. The smaller the size is, the more it will be used. One of the
greatest advantages of Vue.js is its small size. The size of this
framework is 18–21KB.

14. Key Features:
• Adaptable: Vue allows the user to write his template in HTML file, JavaScript
file, and pure JavaScript file using virtual nodes. This flexibility also makes it
easy to understand for the developers of React.js, Angular.js, and any other
new JavaScript framework. It is based on JavaScript framework and can be
integrated into other applications built on JavaScript.
• Detailed docs: Developers always like to use the framework with detailed
documentation because it is always easy for them to write their first
application. The documentation with Vue.js is so comprehensive that any user
who knows a little about JavaScript and HTML can develop his own application
or web page.

15. 3. NODE.JS:
Node.js is a open source, server-side platform built on Google
Chrome’s JavaScript Engine. The number of websites using NodeJS
has crossed 84,000. It is one of the most downloaded, cross-platform
runtime environments for executing JavaScript code. it follows a
single threaded model with event looping. Applications created by
Node.js never buffer the data. These applications simply output the
data in chunks. It provides no. of libraries of various java script
modules to simplify the development of web applications. Node.js is
highly scalable.

16. VUE.JS: Key Features

17. Key Features:
• Non-blocking: All APIs of Node.js library are asynchronous, that is,
non-blocking. It essentially means a Node.js based server never
waits for an API to return data. The server moves to the next API
after calling it and a notification mechanism of Events helps the
server to get a response from the previous API call.
• Single threaded: Node.js makes use of a single threaded model
with event looping. The Event mechanism helps the server to
respond in a non-blocking way, resulting in making the server highly
scalable as opposed to traditional servers which create limited
threads to handle requests. The single-threaded program used by
Node.js can provide service to a much larger number of requests, as
compared to traditional servers like Apache HTTP Server.

18. Key Features:
• Fast: NodeJS was built on Google Chrome’s JavaScript Engine called
V8 engine. Google’s V8 JavaScript Engine makes sure that the
Node.js library executes its code at lightning fast speeds.
• Data streaming: NodeJS applications never buffer any data, they
just output the data in the form of data chunks. This way NodeJS
provides faster services.

19. 3. BACKBONE.JS:
• Backbone.JS is a lightweight JavaScript library that allows to
develop and structure the client-side applications that run in a web
browser. Unlike other frameworks, Backbone puts the developer in
charge of choosing the right tool that works best for a given project.
Currently, over half a million websites are making use of Backbone,
this includes tumblr.com, espn.com, soundcloud.com and many
more. It is often used today in both legacy operations and in new
projects. Its maturity ensures that it is more stable and secure
framework for working.

20. VUE.JS: Key Features

21. Key Features:
• Separated business and UI logic: The single most important thing
that Backbone can help you with, is keeping your business logic
separate from your user interface. When the two are entangled,
change is hard. But when logic doesn’t depend on UI, your interface
becomes easier to work with.
• Event-driven communication: When a project grows, the jQuery
declarations and callbacks gets more complex. The code becomes
more cluttered. Backbone.js overcomes this problem by providing
an event-driven communication between views and models.

22. Key Features:
• Less code: Conventions are a great way to introduce a common
coding style without the need of coming up with an extensive set of
coding standards. The more you stick to backbone conventions the
less you have to code, and in turn, the code becomes more
standardized and readable.
• Syncing with backend: All thanks to its excellent support for RESTful
APIs, the models in Backbone.JS can be easily tied to a back-end. If
the API is designed correctly, backbone is already configured to
access these directly for read, write, and delete operations.

23. CONCLUSION:
Over the years there have been many JavaScript frameworks release
and choosing one amongst them can be a challenge. In this, we have
discussed about some best Java script frameworks but there are many
more frameworks exist in market with various features and motives. If
you’re confused and you don’t know which one to choose or which is
the right one for you then this presentation will guide you for choosing
the best one according to your requirement.

24. THANK YOU
BY : RAJKUMAR JANGID