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1. MASTERING THE ART OF
BUILDING DYNAMIC WEB
APPLICATIONS
REACTJS
UNLEASHED:
https://www.cetpainfotech.com/technolgy/
react-js-training
+91-921217602

2. INTRODUCTION TO REACTJS
COMPONENTS IN REACTJS
STATE AND PROPS IN REACTJS
REACTJS HOOKS
REACTJS AND REDUX
CONCLUSION
1.
2.
3.
4.
5.
6.
CONTENTS

3. INTRODUCTION
TO REACTJS
ReactJS is a popular JavaScript library used for
building user interfaces. It was developed by
Facebook and is now maintained by a community of
developers. ReactJS allows developers to create
reusable UI components that can be used across
different applications.
One of the key features of ReactJS is its virtual DOM.
This allows ReactJS to update only the parts of the UI
that have changed, rather than updating the entire UI.
This results in faster performance and a better user
experience.

4. COMPONENTS IN
In ReactJS, components are the building blocks of the
UI. Components can be thought of as functions that
take in data as input and return UI elements as
output. Components can be either class-based or
function-based.
REACTJS
Class-based components in ReactJS are created using
the ES6 class syntax. They have a state object which
stores data that can change over time. Function-
based components, on the other hand, are simpler
and do not have a state object. They are commonly
used for rendering static content.

5. STATE AND PROPS
IN REACTJS
State and props are two important concepts in
ReactJS. State refers to the data that can change
over time within a component. Props, on the
other hand, are read-only and are passed down
from a parent component to a child component.
State can be updated using the setState()
method in ReactJS. When the state of a
component changes, ReactJS re-renders the
component and updates the UI. Props are used
to pass data and event handlers down to child
components.

6. REACTJS HOOKS
Hooks were introduced in ReactJS version 16.8.
They allow developers to use state and other
ReactJS features in function-based components.
Prior to hooks, state could only be used in class-
based components.
There are several hooks available in ReactJS,
including useState(), useEffect(), useContext(),
and useRef(). These hooks allow developers to
manage state, handle side effects, and access the
ReactJS context and DOM.

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REACTJS REDUX
ReactJS and Redux
Redux is a popular state
management library used with
ReactJS. It provides a centralized
store for managing the state of
an application. Redux can be
used with both class-based and
function-based components.

8. CONCLUSION
ReactJS is a powerful JavaScript library used for
building user interfaces. Its virtual DOM and
component-based architecture make it fast and
efficient. With the introduction of hooks, developers
can now use state and other ReactJS features in
function-based components.
ReactJS can be used with other libraries and
frameworks, such as Redux, to provide a scalable and
predictable way of managing state in large
applications. Overall, ReactJS is a great choice for
building modern web applications.

9. THANK
YOU