In this article, yo will learn how to operate with & "useContext" hook in React. You will learn how to use "useContext" hook and how it works in React.
How To Utilize Context API With Class And Functional Componen in React.pptxBOSC Tech Labs
The article involves the use case of context API in React. Here you will learn how you can use context API with class components and functional components.
React is a JavaScript framework used for building user interfaces. It uses components as the building blocks for user interfaces and embraces functional programming principles like immutable data and pure functions. The key aspects of React include JSX which allows writing HTML in JavaScript files, components which are functions that output HTML, and hooks which allow components to interact with state and lifecycle events.
This document provides an introduction to React, including what React is, its history and timeline, common front-end development tasks it addresses, and its core fundamentals like JSX, functional programming principles, and components. It discusses React hooks like useState and useEffect, building a React project, and integrating third-party libraries. The workshop will cover topics like creating a new React app, building a component hierarchy for a todo list application, and using the key property for dynamic lists.
react-slides.pdf gives information about react libraryjanet736113
React is a framework that employs Webpack to automatically compile React, JSX, and ES6 code while handling CSS file prefixes. React is a JavaScript-based UI development library. Although React is a library rather than a language, it is widely used in web development. The library first appeared in May 2013 and is now one of the most commonly used frontend libraries for web development.
React offers various extensions for entire application architectural support, such as Flux and React Native, beyond mere UI,When compared to other technologies on the market, React is a new technology. Jordan Walke, a software engineer at Facebook, founded the library in 2011, giving it life. The likes of XHP, a straightforward HTML component framework for PHP, have an influence on React. React's newsfeed was its debut application in 2011. Later, Instagram picks it up and incorporates it into their platform,
Advantages
Makes use of the JavaScript structure known as virtual DOM. Since JavaScript's virtual DOM is quicker than the conventional DOM, this will boost the speed of programs.
Can be used with various systems and on both client and server sides is commendable.
Components and identify trends make larger apps easier to manage by increasing clarity.
Limitations
Only addresses the app's angle and distance; as a result, additional techniques must be selected if you want a full collection of development tools.
Employs inline scripting and JSX, which some programmers might find uncomfortable.
React JS; all concepts. Contains React Features, JSX, functional & Class comp...Karmanjay Verma
This ppt contains all concepts of React JS. This contains React Features JSX, functional & Class component, Hooks. PPT includes sample code also for each defination in comment.
For more detail and source code
https://github.com/KPCodeLearning/React-Learning-App
https://kpcodelearning.github.io/React-Learning-App/
https://www.linkedin.com/in/karmanjayverma/
Learn React hooks best practices which you should follow in 2022. You will know the some of the best tricks to use the React hooks in 2022. Read the complete article for more insights.
Redux and context api with react native app introduction, use cases, implemen...Katy Slemon
The document compares Redux and Context API for state management in React Native apps. It discusses the purpose and building blocks of each, provides an example counter app using both approaches, and compares their key differences. Redux is designed for centralized state management while Context API is for passing data through a component tree without prop drilling. Redux uses actions, reducers and a store while Context API uses contexts and providers. The example shows implementing each approach and the document concludes that Redux is better for large complex apps that need precise state management.
How To Utilize Context API With Class And Functional Componen in React.pptxBOSC Tech Labs
The article involves the use case of context API in React. Here you will learn how you can use context API with class components and functional components.
React is a JavaScript framework used for building user interfaces. It uses components as the building blocks for user interfaces and embraces functional programming principles like immutable data and pure functions. The key aspects of React include JSX which allows writing HTML in JavaScript files, components which are functions that output HTML, and hooks which allow components to interact with state and lifecycle events.
This document provides an introduction to React, including what React is, its history and timeline, common front-end development tasks it addresses, and its core fundamentals like JSX, functional programming principles, and components. It discusses React hooks like useState and useEffect, building a React project, and integrating third-party libraries. The workshop will cover topics like creating a new React app, building a component hierarchy for a todo list application, and using the key property for dynamic lists.
react-slides.pdf gives information about react libraryjanet736113
React is a framework that employs Webpack to automatically compile React, JSX, and ES6 code while handling CSS file prefixes. React is a JavaScript-based UI development library. Although React is a library rather than a language, it is widely used in web development. The library first appeared in May 2013 and is now one of the most commonly used frontend libraries for web development.
React offers various extensions for entire application architectural support, such as Flux and React Native, beyond mere UI,When compared to other technologies on the market, React is a new technology. Jordan Walke, a software engineer at Facebook, founded the library in 2011, giving it life. The likes of XHP, a straightforward HTML component framework for PHP, have an influence on React. React's newsfeed was its debut application in 2011. Later, Instagram picks it up and incorporates it into their platform,
Advantages
Makes use of the JavaScript structure known as virtual DOM. Since JavaScript's virtual DOM is quicker than the conventional DOM, this will boost the speed of programs.
Can be used with various systems and on both client and server sides is commendable.
Components and identify trends make larger apps easier to manage by increasing clarity.
Limitations
Only addresses the app's angle and distance; as a result, additional techniques must be selected if you want a full collection of development tools.
Employs inline scripting and JSX, which some programmers might find uncomfortable.
React JS; all concepts. Contains React Features, JSX, functional & Class comp...Karmanjay Verma
This ppt contains all concepts of React JS. This contains React Features JSX, functional & Class component, Hooks. PPT includes sample code also for each defination in comment.
For more detail and source code
https://github.com/KPCodeLearning/React-Learning-App
https://kpcodelearning.github.io/React-Learning-App/
https://www.linkedin.com/in/karmanjayverma/
Learn React hooks best practices which you should follow in 2022. You will know the some of the best tricks to use the React hooks in 2022. Read the complete article for more insights.
Redux and context api with react native app introduction, use cases, implemen...Katy Slemon
The document compares Redux and Context API for state management in React Native apps. It discusses the purpose and building blocks of each, provides an example counter app using both approaches, and compares their key differences. Redux is designed for centralized state management while Context API is for passing data through a component tree without prop drilling. Redux uses actions, reducers and a store while Context API uses contexts and providers. The example shows implementing each approach and the document concludes that Redux is better for large complex apps that need precise state management.
React components are the building blocks of React applications. There are two types of components in React - functional components and class components. Functional components are simple JavaScript functions that return JSX, while class components are ES6 classes that can maintain internal state and pass data between other components. Components render reusable pieces of UI and the entire application UI is composed of different individual components.
This document describes how to build a simple todo application with React and Material UI. It discusses setting up the project structure with components, contexts, reducers and custom hooks to manage application state. Key aspects covered include using contexts to pass data between components, a reducer to manage todo data in local storage, and custom hooks for form inputs, toggling and local storage. The main components built are TodoApp, TodoList, TodoForm and Todo. This provides a fully functional todo app implementing modern React practices.
At Lia Infraservice we create Dynamic Websites. Become a front-end React JS developer and be a part of our tech-savvy Web App Development Company in Chennai.
This document provides an overview and introduction to React, a JavaScript library for building user interfaces. It discusses why React is used, how to set up a React environment, core React concepts like components, props, state, lifecycles and events. It also introduces React Native for building native mobile apps with React. The document emphasizes learning React through hands-on examples and practice.
ReactJS is a popular JavaScript library for building user interfaces. It allows developers to create reusable UI components and was developed by Facebook. Some major companies that use React include Instagram, Netflix, Yahoo Mail, and WhatsApp. React can be installed on Ubuntu and Windows systems. Key features of React include components, props, state, and JSX syntax which allows HTML-like markup to be written in JavaScript.
Getting Started with React, When You’re an Angular DeveloperFabrit Global
If you’re an Angular developer looking into expanding your stack with React, this presentation will come in handy! It is an insightful introduction to React in comparison with Angular, where you will find all the basic knowledge you need to get started.
We’ll deep-dive into tech details such as:
● Virtual DOM
● JSX
● Functional vs Class-Based Components
● State
● How to Style
● Requests
● Upgrading: Redux and Flux and more!
You can also check out the full article version here: https://blog.fabritglobal.com/product-development/getting-started-with-react-angular-developer/
Fundamental Concepts of React JS for Beginners.pdfStephieJohn
React is a JavaScript library for building user interfaces using components. Components are reusable pieces of code that present UI and can be functions or classes. Class components provide key functions like state that function components lack. Components break down complex UIs into independent and reusable pieces. The document then covers fundamental React concepts like getting started, component structure, state, rendering components, and the component lifecycle.
This document provides an overview of React including:
- React is a JavaScript library created by Facebook for building user interfaces
- It uses virtual DOM to efficiently re-render components on updates rather than entire page
- React supports ES6 features and uses classes, arrow functions, and other syntax
- Popular tools for React include Create React App for setting up projects and React Dev Tools for debugging
React Best Practices All Developers Should Follow in 2024.pdfBOSC Tech Labs
Stay ahead with these crucial React best practices for 2024. Learn how to optimize your React applications for performance, maintainability, and scalability.
React and Flux life cycle with JSX, React Router and Jest Unit TestingEswara Kumar Palakollu
Understanding of React, JSX, Flux, react-router and Jest for React and Flux Unit Testing.
Detailed view of react life cycle and flux life cycle along with React life cycle.
React with MVC pattern and React + Flux with MVC pattern explained.
Poonam pursued her Masters in Computer Science from Northeastern University and joined Intuit in 2014. She is currently working as an iOS/Front End engineer at TurboTax and is passionate about accessibility. Her hobbies include cooking and traveling with close ones. She presented on React accessibility at CSUN 2018, covering topics like managing page title and focus, testing accessibility, and tools to support accessible development.
This document provides an introduction to React.js, including how it allows building large, fast web apps with JavaScript. It explains how to create a basic "Hello World" component in both JSX and JavaScript syntax. It describes key React concepts like elements, components, virtual DOM, and state. Elements are plain objects describing screen content, while components can be classes or functions that return render output. The virtual DOM allows efficiently updating the real DOM. Overall, React uses a component-based approach to build reusable UI and manage state updates.
3 Simple Steps to follow to Create React JS ComponentsSurendra kumar
Today in this article, i will discuss about how to create react js components, but before we start to create components,
let’s have an idea about what is components and why it is required.
https://goo.gl/9rARN5
Getting started with the reactjs, basics of reactjs, introduction of reactjs, core concepts of reactjs and comparison with the other libraries/frameworks
This document discusses several React patterns including compositional components, higher order components, render props, presentational and container components, child aware components, and child enhancing components. Compositional components allow code reuse through composition instead of inheritance. Higher order components accept a component and return an enhanced one. Render props share code through a prop whose value is a function. Presentational components focus on UI while container components manage data and logic. Child aware components interrogate child components' data through props and selectors. Child enhancing components add functionality to child components.
React (or React Js) is a declarative, component-based JS library to build SPA(single page applications) which was created by Jordan Walke, a software engineer at Facebook. It is flexible and can be used in a variety of projects.
GoRouter_ The Key to Next-Level Routing in Flutter Development.pdfBOSC Tech Labs
Are you struggling with navigation in your Flutter app? This article guide walks you through using GoRouter in 2024 for smooth and simple app navigation.
5 Key Steps to Successfully Hire Reactjs App Developers.pdfBOSC Tech Labs
This is an in-depth guide to help recruiters in hiring engineers for React JS. In 2024, React JS is one of the most prominent and widely used JavaScript libraries for front-end development.
More Related Content
Similar to How to use UseContext Hook in React.pptx
React components are the building blocks of React applications. There are two types of components in React - functional components and class components. Functional components are simple JavaScript functions that return JSX, while class components are ES6 classes that can maintain internal state and pass data between other components. Components render reusable pieces of UI and the entire application UI is composed of different individual components.
This document describes how to build a simple todo application with React and Material UI. It discusses setting up the project structure with components, contexts, reducers and custom hooks to manage application state. Key aspects covered include using contexts to pass data between components, a reducer to manage todo data in local storage, and custom hooks for form inputs, toggling and local storage. The main components built are TodoApp, TodoList, TodoForm and Todo. This provides a fully functional todo app implementing modern React practices.
At Lia Infraservice we create Dynamic Websites. Become a front-end React JS developer and be a part of our tech-savvy Web App Development Company in Chennai.
This document provides an overview and introduction to React, a JavaScript library for building user interfaces. It discusses why React is used, how to set up a React environment, core React concepts like components, props, state, lifecycles and events. It also introduces React Native for building native mobile apps with React. The document emphasizes learning React through hands-on examples and practice.
ReactJS is a popular JavaScript library for building user interfaces. It allows developers to create reusable UI components and was developed by Facebook. Some major companies that use React include Instagram, Netflix, Yahoo Mail, and WhatsApp. React can be installed on Ubuntu and Windows systems. Key features of React include components, props, state, and JSX syntax which allows HTML-like markup to be written in JavaScript.
Getting Started with React, When You’re an Angular DeveloperFabrit Global
If you’re an Angular developer looking into expanding your stack with React, this presentation will come in handy! It is an insightful introduction to React in comparison with Angular, where you will find all the basic knowledge you need to get started.
We’ll deep-dive into tech details such as:
● Virtual DOM
● JSX
● Functional vs Class-Based Components
● State
● How to Style
● Requests
● Upgrading: Redux and Flux and more!
You can also check out the full article version here: https://blog.fabritglobal.com/product-development/getting-started-with-react-angular-developer/
Fundamental Concepts of React JS for Beginners.pdfStephieJohn
React is a JavaScript library for building user interfaces using components. Components are reusable pieces of code that present UI and can be functions or classes. Class components provide key functions like state that function components lack. Components break down complex UIs into independent and reusable pieces. The document then covers fundamental React concepts like getting started, component structure, state, rendering components, and the component lifecycle.
This document provides an overview of React including:
- React is a JavaScript library created by Facebook for building user interfaces
- It uses virtual DOM to efficiently re-render components on updates rather than entire page
- React supports ES6 features and uses classes, arrow functions, and other syntax
- Popular tools for React include Create React App for setting up projects and React Dev Tools for debugging
React Best Practices All Developers Should Follow in 2024.pdfBOSC Tech Labs
Stay ahead with these crucial React best practices for 2024. Learn how to optimize your React applications for performance, maintainability, and scalability.
React and Flux life cycle with JSX, React Router and Jest Unit TestingEswara Kumar Palakollu
Understanding of React, JSX, Flux, react-router and Jest for React and Flux Unit Testing.
Detailed view of react life cycle and flux life cycle along with React life cycle.
React with MVC pattern and React + Flux with MVC pattern explained.
Poonam pursued her Masters in Computer Science from Northeastern University and joined Intuit in 2014. She is currently working as an iOS/Front End engineer at TurboTax and is passionate about accessibility. Her hobbies include cooking and traveling with close ones. She presented on React accessibility at CSUN 2018, covering topics like managing page title and focus, testing accessibility, and tools to support accessible development.
This document provides an introduction to React.js, including how it allows building large, fast web apps with JavaScript. It explains how to create a basic "Hello World" component in both JSX and JavaScript syntax. It describes key React concepts like elements, components, virtual DOM, and state. Elements are plain objects describing screen content, while components can be classes or functions that return render output. The virtual DOM allows efficiently updating the real DOM. Overall, React uses a component-based approach to build reusable UI and manage state updates.
3 Simple Steps to follow to Create React JS ComponentsSurendra kumar
Today in this article, i will discuss about how to create react js components, but before we start to create components,
let’s have an idea about what is components and why it is required.
https://goo.gl/9rARN5
Getting started with the reactjs, basics of reactjs, introduction of reactjs, core concepts of reactjs and comparison with the other libraries/frameworks
This document discusses several React patterns including compositional components, higher order components, render props, presentational and container components, child aware components, and child enhancing components. Compositional components allow code reuse through composition instead of inheritance. Higher order components accept a component and return an enhanced one. Render props share code through a prop whose value is a function. Presentational components focus on UI while container components manage data and logic. Child aware components interrogate child components' data through props and selectors. Child enhancing components add functionality to child components.
React (or React Js) is a declarative, component-based JS library to build SPA(single page applications) which was created by Jordan Walke, a software engineer at Facebook. It is flexible and can be used in a variety of projects.
GoRouter_ The Key to Next-Level Routing in Flutter Development.pdfBOSC Tech Labs
Are you struggling with navigation in your Flutter app? This article guide walks you through using GoRouter in 2024 for smooth and simple app navigation.
5 Key Steps to Successfully Hire Reactjs App Developers.pdfBOSC Tech Labs
This is an in-depth guide to help recruiters in hiring engineers for React JS. In 2024, React JS is one of the most prominent and widely used JavaScript libraries for front-end development.
How do you hire a skilled Android developer for your project_.pdfBOSC Tech Labs
Find skilled Android developers for your project. Learn the essential skills, tech stack, and hiring process. Contact BOSC Tech Labs for expert app solutions!
Swiftui Vs Uikit_ Choosing the Right Ui Framework for ios Apps.pdfBOSC Tech Labs
Learning about SwiftUI vs UIKit: Choose the right UI framework for iOS apps to optimize development, enhance UI design, and streamline the coding process.
Learn the 2024 guide to custom software development. Check industry trends, the development process, and benefits for businesses seeking tailored solutions.
What is the Easiest Way to Hire a React Developer?BOSC Tech Labs
Explore the streamlined approach to hiring a React developer with Bosc Tech Labs. Our guide simplifies the process, ensuring you connect with top-tier React talent effortlessly. Start building your dynamic team today!
Top 10 React Carousel Component Libraries and their Usage TrendsBOSC Tech Labs
Discover the top 10 React Carousel Component Libraries and their Usage Trends! From sleek transitions to responsive designs, explore the leading tools empowering developers to create stunning carousels. Stay ahead with insights into how these libraries are shaping the web landscape.
The Comprehensive Tech Guide to iOS Mobile App Development: From Concept to L...BOSC Tech Labs
Check how iOS app development revolutionizes business growth with secure, user-friendly apps. Boost your ROI & engage tech-savvy customers with BOSC Tech Labs' expertise.
Mobile App Development Company In Noida | Drona InfotechDrona Infotech
React.js, a JavaScript library developed by Facebook, has gained immense popularity for building user interfaces, especially for single-page applications. Over the years, React has evolved and expanded its capabilities, becoming a preferred choice for mobile app development. This article will explore why React.js is an excellent choice for the Best Mobile App development company in Noida.
Visit Us For Information: https://www.linkedin.com/pulse/what-makes-reactjs-stand-out-mobile-app-development-rajesh-rai-pihvf/
A Comprehensive Guide on Implementing Real-World Mobile Testing Strategies fo...kalichargn70th171
In today's fiercely competitive mobile app market, the role of the QA team is pivotal for continuous improvement and sustained success. Effective testing strategies are essential to navigate the challenges confidently and precisely. Ensuring the perfection of mobile apps before they reach end-users requires thoughtful decisions in the testing plan.
Nashik's top web development company, Upturn India Technologies, crafts innovative digital solutions for your success. Partner with us and achieve your goals
Using Query Store in Azure PostgreSQL to Understand Query PerformanceGrant Fritchey
Microsoft has added an excellent new extension in PostgreSQL on their Azure Platform. This session, presented at Posette 2024, covers what Query Store is and the types of information you can get out of it.
The Rising Future of CPaaS in the Middle East 2024Yara Milbes
Explore "The Rising Future of CPaaS in the Middle East in 2024" with this comprehensive PPT presentation. Discover how Communication Platforms as a Service (CPaaS) is transforming communication across various sectors in the Middle East.
Boost Your Savings with These Money Management AppsJhone kinadey
A money management app can transform your financial life by tracking expenses, creating budgets, and setting financial goals. These apps offer features like real-time expense tracking, bill reminders, and personalized insights to help you save and manage money effectively. With a user-friendly interface, they simplify financial planning, making it easier to stay on top of your finances and achieve long-term financial stability.
Liberarsi dai framework con i Web Component.pptxMassimo Artizzu
In Italian
Presentazione sulle feature e l'utilizzo dei Web Component nell sviluppo di pagine e applicazioni web. Racconto delle ragioni storiche dell'avvento dei Web Component. Evidenziazione dei vantaggi e delle sfide poste, indicazione delle best practices, con particolare accento sulla possibilità di usare web component per facilitare la migrazione delle proprie applicazioni verso nuovi stack tecnologici.
Superpower Your Apache Kafka Applications Development with Complementary Open...Paul Brebner
Kafka Summit talk (Bangalore, India, May 2, 2024, https://events.bizzabo.com/573863/agenda/session/1300469 )
Many Apache Kafka use cases take advantage of Kafka’s ability to integrate multiple heterogeneous systems for stream processing and real-time machine learning scenarios. But Kafka also exists in a rich ecosystem of related but complementary stream processing technologies and tools, particularly from the open-source community. In this talk, we’ll take you on a tour of a selection of complementary tools that can make Kafka even more powerful. We’ll focus on tools for stream processing and querying, streaming machine learning, stream visibility and observation, stream meta-data, stream visualisation, stream development including testing and the use of Generative AI and LLMs, and stream performance and scalability. By the end you will have a good idea of the types of Kafka “superhero” tools that exist, which are my favourites (and what superpowers they have), and how they combine to save your Kafka applications development universe from swamploads of data stagnation monsters!
WMF 2024 - Unlocking the Future of Data Powering Next-Gen AI with Vector Data...Luigi Fugaro
Vector databases are transforming how we handle data, allowing us to search through text, images, and audio by converting them into vectors. Today, we'll dive into the basics of this exciting technology and discuss its potential to revolutionize our next-generation AI applications. We'll examine typical uses for these databases and the essential tools
developers need. Plus, we'll zoom in on the advanced capabilities of vector search and semantic caching in Java, showcasing these through a live demo with Redis libraries. Get ready to see how these powerful tools can change the game!
Consistent toolbox talks are critical for maintaining workplace safety, as they provide regular opportunities to address specific hazards and reinforce safe practices.
These brief, focused sessions ensure that safety is a continual conversation rather than a one-time event, which helps keep safety protocols fresh in employees' minds. Studies have shown that shorter, more frequent training sessions are more effective for retention and behavior change compared to longer, infrequent sessions.
Engaging workers regularly, toolbox talks promote a culture of safety, empower employees to voice concerns, and ultimately reduce the likelihood of accidents and injuries on site.
The traditional method of conducting safety talks with paper documents and lengthy meetings is not only time-consuming but also less effective. Manual tracking of attendance and compliance is prone to errors and inconsistencies, leading to gaps in safety communication and potential non-compliance with OSHA regulations. Switching to a digital solution like Safelyio offers significant advantages.
Safelyio automates the delivery and documentation of safety talks, ensuring consistency and accessibility. The microlearning approach breaks down complex safety protocols into manageable, bite-sized pieces, making it easier for employees to absorb and retain information.
This method minimizes disruptions to work schedules, eliminates the hassle of paperwork, and ensures that all safety communications are tracked and recorded accurately. Ultimately, using a digital platform like Safelyio enhances engagement, compliance, and overall safety performance on site. https://safelyio.com/
The Power of Visual Regression Testing_ Why It Is Critical for Enterprise App...kalichargn70th171
Visual testing plays a vital role in ensuring that software products meet the aesthetic requirements specified by clients in functional and non-functional specifications. In today's highly competitive digital landscape, users expect a seamless and visually appealing online experience. Visual testing, also known as automated UI testing or visual regression testing, verifies the accuracy of the visual elements that users interact with.
Why Apache Kafka Clusters Are Like Galaxies (And Other Cosmic Kafka Quandarie...Paul Brebner
Closing talk for the Performance Engineering track at Community Over Code EU (Bratislava, Slovakia, June 5 2024) https://eu.communityovercode.org/sessions/2024/why-apache-kafka-clusters-are-like-galaxies-and-other-cosmic-kafka-quandaries-explored/ Instaclustr (now part of NetApp) manages 100s of Apache Kafka clusters of many different sizes, for a variety of use cases and customers. For the last 7 years I’ve been focused outwardly on exploring Kafka application development challenges, but recently I decided to look inward and see what I could discover about the performance, scalability and resource characteristics of the Kafka clusters themselves. Using a suite of Performance Engineering techniques, I will reveal some surprising discoveries about cosmic Kafka mysteries in our data centres, related to: cluster sizes and distribution (using Zipf’s Law), horizontal vs. vertical scalability, and predicting Kafka performance using metrics, modelling and regression techniques. These insights are relevant to Kafka developers and operators.
14 th Edition of International conference on computer visionShulagnaSarkar2
About the event
14th Edition of International conference on computer vision
Computer conferences organized by ScienceFather group. ScienceFather takes the privilege to invite speakers participants students delegates and exhibitors from across the globe to its International Conference on computer conferences to be held in the Various Beautiful cites of the world. computer conferences are a discussion of common Inventions-related issues and additionally trade information share proof thoughts and insight into advanced developments in the science inventions service system. New technology may create many materials and devices with a vast range of applications such as in Science medicine electronics biomaterials energy production and consumer products.
Nomination are Open!! Don't Miss it
Visit: computer.scifat.com
Award Nomination: https://x-i.me/ishnom
Conference Submission: https://x-i.me/anicon
For Enquiry: Computer@scifat.com
14 th Edition of International conference on computer vision
How to use UseContext Hook in React.pptx
1.
2. How to Operate the “useContext” Hook In React
• The useContext hook in React assembles it comfortably to pass data
to your app. Without holding them manually- deliver props down the
tree.
• It can create an easy choice for Redux when your data is superficial-
or your app is short. Most React Hooks operations deliver elements
credentials they didn’t have earlier.
• Consumer elements hand data, but it is bulky to note extended
functional code to operate this context API. So the UseContext hook
enables the creation of the code readable, less verbose, and
terminates the need to present a consumer element.
3. Syntax:
• So if you are planning to outsource React js development services,
then you should choose BOSC Tech Labs for all your IT outsourcing
needs.
• The useContext hook is slightly distinct, though- it just assembles
things to look pleasant. In this article, we will read about operating
the useContext in React.
(const authContext = useContext(initialValue));
5. Why Context in React?
• Elements are the construction blocks of the consequence in React.
These elements are illustrated in a tree hierarchy where an element is
the parent of a child element.
• The data gush in React is down the order, which is the data gush from
parent element to child element and further down.
• If the element is more in-depth in the hierarchy than the parent
element, then the data is- passed through all the midpoint elements
first. And then, it resolves conveniently to the element at the bottom
of the order.
6. • To prevent this type of design, operating redux as a library, some
ReactJs developers perform on the global stock. And that supplies
data or conditions globally. And without giving data or selecting a
hierarchy, it is instantly attainable to all elements.
• There are a few steps to execute react useContext in your project-
• To assemble a reference object, create a file and export that reference
object from that file.
7. • We have assembled and shipped a context object, and it receives a
defaulting parameter or value that can depart to it.
• If no prop is- passed through the parent element, it brings the default
prop defined in the context object.
[
theme-context.js
export const ThemeContext = React.createContext({
theme: themes.dark,
toggleTheme: () => {},
});
]
8. Now in a parent element whose value is to pass to the child element.
We will encase any child elements varying down the hierarchy in the
comeback context provider.
Element A — Element B — Element C — Element D
(predecessor) (child 1) (child 2) (child 3)
Here in the above line, element A is the parent element.
Element B is the child of element A.
Element C is the child of element B.
And Element D is the child of element C.
9. [
app.js
import {ThemeContext, themes} from './theme-context';
import ThemedButton from './themed-button';
function Toolbar(props) {
return (
Change Theme
);
}
12. Here class App is the ancestor, the Toolbar is a child functional element,
and ThemedButton is also a child component.
ThemedButton will take the default value of the context as it is- not
wrap it inside any context provider.
We are done with the parent element and now move on to the child
element definition.
In child elements, we can access values in many manners.
Let’s examine the first method to access the value in the child element
(context type).
14. ThemedButton.contextType = ThemeContext;
export default ThemedButton;
After Context
import {ThemeContext} from './theme-context';
import React from ‘react’
class ThemedButton extends React.Element {
render() {
let props = this.props;
let theme = this.context; //Replaced by this.context
return (
);
}
}
ThemedButton.contextType = ThemeContext;
export default ThemedButton;
]
15. Here ThemedButton is a child element and if you desire to access the
value, then- use ContextType before shipping the segment.
So now we will see that- there is another way to access matters using
React Hooks.
[
import {ThemeContext} from './theme-context';
import React, {useContext} from ‘react’
class ThemedButton extends React.Component {
render() {
let theme = useContext(ThemeContext);
return (
);
}
}
export default ThemedButton;
]
16. Conclusion:
This is how we can operate with the “useContext” hook in react. We
hope you got an idea about using the “useContext” hook in react. So,
Thank you for reading our article. We hope you enjoyed our content.
Moreover, please share your ideas with us, so that we can improve our
content.
Content Resource: https://bosctechlabs.com/operate-usecontext-
hook-in-react/