learn what React JS is & why we should use React JS

1
AN OVERVIEW OF ReactJS

• React (also known as React.js or ReactJS) is a
  library of javascript that is used for building
  user interfaces. It is maintained by Facebook and
  a community of individual developers and
  companies. The most significant features of
  Reactjs is a major reality or the fact that you
  can generate components, which are like custom,
  reusable HTML elements that swiftly and
  efficiently develop the user's interfaces.

2
What is React JS
React uses a declarative paradigm that makes it
quite easier for your application and aims to be
both sufficient and more flexible. It is an open-
source, component- based front end library of
javascript that is only reliable for the view
layer of the application. And if talk about the
declarative view that makes your code more easy
and more predictable to debug.
3
Features of ReactJS

• Lightweight DOM For Better Performance
• Easy Learning Curve
• Components Support And Little Dependencies
• A desired interface can be created in a
  relatively easy manner.
• Error boundaries
• Easy to understand, declarative error handling

4
How do you Install React?
As you already aware of what react is in actual.
It is a library of JavaScript, so saying install
might sound a bit weird. Probably the word Setup
is a better word, but you get the concept.There
are many ways to Install React we are going to
show you in the below section so that it can
simply work on your site or any app.
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Step 1 Environment Setup
Getting React up and running is not as simple as
downloading one large piece of software. You will
need to install many, smaller software
packages.Here, the first thing to install is a
good installer! You need a way to download and
install software packages easily, without having
to worry about dependencies.
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Step 2
Moreover, you can install npm by installing
Node.js. Node.js is an environment for developing
server-side applications. When you install
Node.js, npm will install automatically. a. Ctrl-c
lick here to navigate to the Node.js homepage in
a new tab. b. You should see links to download
Node.js.
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Step 3
c. Click on the download link of your choice.
Follow the subsequent instructions to install
Node.js and npm. d. If youve already installed
Node.js, thats okay, do it anyway. Congratulatio
ns! Youve just installed some incredibly
powerful software!
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ReactJS

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