First Part of React JS 15 Key Concepts – Video number 1 / 10

What you will learn

Understanding of React JS Single Page application concepts

Understanding the important and sensitive topics such as React Props State Lifecycle Methods Virtual DOM React Router

Understanding Hooks Context API Redux Higher-Order Components (HOCs) ,Render

Reconciliation, Unidirectional Data Flow, Synthetic Events, Event Handling


You will be able to learn following topics

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  1. React:
    • Understand the fundamentals of React.js and its key concepts.
    • Learn how to set up a development environment for React projects.
    • Build a solid foundation in React syntax, components, and JSX.
  2. Props:
    • Understand the concept of props and how to pass data from a parent component to a child component.
    • Learn how to use props to customize and configure reusable components.
    • Explore different ways of passing props, including default values and destructuring.
  3. State:
    • Understand the concept of state and its role in managing dynamic data in React components.
    • Learn how to initialize and update state using setState.
    • Explore the use of state to build interactive and dynamic user interfaces.
  4. Lifecycle Methods:
    • Gain a comprehensive understanding of React’s component lifecycle and the different phases it goes through.
    • Learn how to leverage lifecycle methods to perform specific actions at various stages of a component’s lifecycle.
    • Understand the deprecation of certain lifecycle methods in newer versions of React.
  5. Virtual DOM:
    • Understand the concept of the Virtual DOM and its role in optimizing React’s rendering process.
    • Learn how React’s reconciliation algorithm works to efficiently update the DOM.
    • Explore the benefits of using the Virtual DOM in terms of performance and user experience.
  6. React Router:
    • Learn how to set up routing in a React application using React Router.
    • Understand how to define routes, handle navigation, and create nested routes.
    • Explore advanced features of React Router, such as route parameters and route guards.
  7. Hooks:
    • Understand the motivation behind React Hooks and their benefits.
    • Learn how to use built-in hooks like useState, useEffect, and useContext.
    • Explore custom hook creation and how to leverage hooks to write more concise and reusable code.
  8. Context API:
    • Understand the Context API and how it enables global state management in React applications.
    • Learn how to create and consume context using the createContext and useContext hooks.
    • Explore advanced usage patterns of the Context API, such as nested contexts and context composition.
  9. Redux:
    • Gain a thorough understanding of Redux and its core principles.
    • Learn how to set up Redux in a React application and manage global state.
    • Explore concepts such as actions, reducers, and the Redux store, and understand how they work together.
  10. Higher-Order Components (HOCs):
    • Understand the concept of Higher-Order Components and their role in code reuse and composition.
    • Learn how to create and use HOCs to add additional functionality to React components.
    • Explore common use cases for HOCs, such as authentication and authorization.
  11. Render:
    • Understand the rendering process in React and how components are rendered to the DOM.
    • Learn about conditional rendering techniques based on state and props.
    • Explore performance optimizations related to rendering, such as shouldComponentUpdate and React.memo.
  12. Reconciliation:
    • Gain a deep understanding of React’s reconciliation process and how it determines what needs to be updated in the DOM.
    • Learn about the diffing algorithm and how React efficiently updates the UI by comparing the previous and current Virtual DOM trees.
    • Understand strategies for optimizing reconciliation, such as using unique keys and minimizing component updates.
  13. Unidirectional Data Flow:
    • Understand the concept of unidirectional data flow in React and its advantages.
    • Learn how to design React applications using a single source of truth for data.
    • Explore patterns such as state lifting and data sharing between components.
  14. Synthetic Events:
    • Understand the concept of synthetic events in React and how they differ from native browser events.
    • Learn how to handle and respond to events in React components.
    • Explore common event handling patterns and techniques.
  15. Event Handling:
    • Learn how to handle different types of events in React components, such as onClick, onChange, and onSubmit.
    • Understand how to write event handlers and update state or trigger actions based on user interactions.
    • Explore advanced event handling techniques, such as event delegation and event bubbling.


What is React JS

What is React JS
does React Reloads the page?
What does SPA stand for?

What is React JS Props

React JS Props
What are props in React.js?
What is the purpose of PropTypes in React.js?

React JS State Management

React JS State Management
How can you update the state of a component?

React JS LifeCycle methods

React JS LifeCycle methods
Which lifecycle method is called right before a component is added to the DOM?
True or False: The render method is considered a lifecycle method in React.

React JS Virtual DOM

React JS Virtual DOM
Which algorithm is used for virtual DOM

What is React Router

What is React Router
React Router Help in redirection – true or false
What is the purpose of React Router in a React.js SPA?

What is React Hooks

What is React Hooks
React Hooks are userful in Class based component approach -true or false ?
What is the purpose of React Hooks?

What is Context API

What is Context API
Context API is useful for page redirection from one page to other, true or false

What is React Redux

What is Redux
What is React Redux?

Higher Order Components

Higher Order Components
What is a Higher-Order Component (HOC) in React?

React Rendering

React Rendering
Which of the following is an advantage of SPAs?

React JS Reconciliation and Virtual DOM Diffing algorithm techniques

React JS Reconciliation and Virtual DOM Diffing algorithm techniques
What is React JS Reconciliation?

React JS Unidirectional Data Flow

React JS Unidirectional Data Flow
What is Unidirectional Data Flow in React.js?
True or False: In React.js, data should only be modified through state updates a

Synthetic Events

Synthetic Events
What are Synthetic Events in React?
How does React handle Synthetic Events?

Event Handling

Event Handling
True or False: SPAs rely on JavaScript frameworks to perform rendering and data
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