Today, ReactJS is the highly used open-source JavaScript Library. It helps in creating impressive web apps that require minimal effort and coding. The main objective of ReactJS is to develop User Interfaces (UI) that improves the speed of the apps. There are important pros and cons of ReactJS given as following:
Advantage of ReactJS
1. Easy to Learn and USe
ReactJS is much easier to learn and use. It comes with a good supply of documentation, tutorials, and training resources. Any developer who comes from a JavaScript background can easily understand and start creating web apps using React in a few days. It is the V(view part) in the MVC (Model-View-Controller) model, and referred to as ?one of the JavaScript frameworks.? It is not fully featured but has the advantage of open-source JavaScript User Interface(UI) library, which helps to execute the task in a better manner.
2. Creating Dynamic Web Applications Becomes Easier
To create a dynamic web application specifically with HTML strings was tricky because it requires a complex coding, but React JS solved that issue and makes it easier. It provides less coding and gives more functionality. It makes use of the JSX(JavaScript Extension), which is a particular syntax letting HTML quotes and HTML tag syntax to render particular subcomponents. It also supports the building of machine-readable codes.
3. Reusable Components
A ReactJS web application is made up of multiple components, and each component has its own logic and controls. These components are responsible for outputting a small, reusable piece of HTML code which can be reused wherever you need them. The reusable code helps to make your apps easier to develop and maintain. These Components can be nested with other components to allow complex applications to be built of simple building blocks. ReactJS uses virtual DOM based mechanism to fill data in HTML DOM. The virtual DOM works fast as it only changes individual DOM elements instead of reloading complete DOM every time.
4. Performance Enhancement
ReactJS improves performance due to virtual DOM. The DOM is a cross-platform and programming API which deals with HTML, XML or XHTML. Most of the developers faced the problem when the DOM was updated, which slowed down the performance of the application. ReactJS solved this problem by introducing virtual DOM. The React Virtual DOM exists entirely in memory and is a representation of the web browser’s DOM. Due to this, when we write a React component, we did not write directly to the DOM. Instead, we are writing virtual components that react will turn into the DOM, leading to smoother and faster performance.
5. The Support of Handy Tools
React JS has also gained popularity due to the presence of a handy set of tools. These tools make the task of the developers understandable and easier. The React Developer Tools have been designed as Chrome and Firefox dev extension and allow you to inspect the React component hierarchies in the virtual DOM. It also allows you to select particular components and examine and edit their current props and state.
6. Known to be SEO Friendly
Traditional JavaScript frameworks have an issue in dealing with SEO. The search engines generally having trouble in reading JavaScript-heavy applications. Many web developers have often complained about this problem. ReactJS overcomes this problem that helps developers to be easily navigated on various search engines. It is because React.js applications can run on the server, and the virtual DOM will be rendering and returning to the browser as a regular web page.
7. The Benefit of Having JavaScript Library
Today, ReactJS is choosing by most of the web developers. It is because it is offering a very rich JavaScript library. The JavaScript library provides more flexibility to the web developers to choose the way they want.
8. Scope for Testing the Codes
ReactJS applications are extremely easy to test. It offers a scope where the developer can test and debug their codes with the help of native tools.
Disadvantage of ReactJS
1. The high pace of development
The high pace of development has an advantage and disadvantage both. In case of disadvantage, since the environment continually changes so fast, some of the developers not feeling comfortable to relearn the new ways of doing things regularly. It may be hard for them to adopt all these changes with all the continuous updates. They need to be always updated with their skills and learn new ways of doing things.
2. Poor Documentation
It is another cons which are common for constantly updating technologies. React technologies updating and accelerating so fast that there is no time to make proper documentation. To overcome this, developers write instructions on their own with the evolving of new releases and tools in their current projects.
3. View Part
ReactJS Covers only the UI Layers of the app and nothing else. So you still need to choose some other technologies to get a complete tooling set for development in the project.
4. JSX as a barrier
ReactJS uses JSX. It’s a syntax extension that allows HTML with JavaScript mixed together. This approach has its own benefits, but some members of the development community consider JSX as a barrier, especially for new developers. Developers complain about its complexity in the learning curve.
So, this brings us to the end of blog. This Tecklearn ‘Pros and Cons of ReactJS’ blog helps you with commonly asked questions if you are looking out for a job in React JS and Front-End Development. If you wish to learn React JS and build a career in Front-End Development domain, then check out our interactive, React.js with Redux Training, that comes with 24*7 support to guide you throughout your learning period.

React.js with Redux Training

About the Course

Tecklearn’s React JS Training Course will help you master the fundamentals of React—an important web framework for developing user interfaces—including JSX, props, state, and events. In this course, you will learn how to build simple components & integrate them into more complex design components. After completing this training, you will be able to build the applications using React concepts such as JSX, Redux, Asynchronous Programming using Redux Saga middleware, Fetch data using GraphQL, perform Testing using Jest, successively Deploy applications using Nginx and Docker plus build Mobile applications using React Native. Accelerate your career as a React.js developer by enrolling into this React.js training.

Why Should you take React.js with Redux Training?

• The average salary for “React Developer” ranges from $100,816 per year to $110,711 per year, based on the role (Front End Developer/Full Stack Developer) – Indeed.com
• React Native Supports Cross-platform Development (iOS and Android), and it can reduce the development effort by almost 50% without compromising quality or productivity
• Currently, React JS is being used by major companies like Walmart, Netflix, and HelloSign.

What you will Learn in this Course?

Introduction to Web Development and React.js
• Fundamentals of React
• Building Blocks of Web Application Development
• Single-page and Multi-page Applications
• Different Client-side Technologies
• MVC Architecture
• Introduction to React
• Installation of React
• JSX and its use case
• DOM
• Virtual DOM and its working
• ECMAScript
• Difference between ES5 and ES6
• NPM Modules

Components, JSX & Props
• React Elements
• Render Function
• Components
• Class Component
• Thinking In Components
• What Is JSX
• JSX Expressions
• Creating Your First Component
• Functional Components

React State Management using Redux
• Need of Redux
• Redux Architecture
• Redux Action
• Redux Reducers
• Redux Store
• Principles of Redux
• Pros of Redux
• NPM Packages required to work with Redux
• More about react-redux package
React & Redux
• The React Redux Node Package
• Provider Component
• Connecting React Components with Redux Store
• Reducer Composition
• Normalization: Points to Keep in Mind When Designing a Redux Store
• Redux Middleware

React Hooks
• Caveat of JavaScript classes.
• Functional components and React hooks
• What are React hooks?
• Basic hooks
• useState() hook
• How to write useState() hook when state variable is an array of objects
• useEffect() hook
• Fetch API data using useEffect() hook
• useContext() hook
• Rules to write React hooks
• Additional hooks
• Custom hooks

Fetch Data using GraphQL
• What is GraphQL?
• Cons of Rest API
• Pros of GraphQL
• Frontend backend communication using GraphQL
• Type system
• GraphQL datatypes
• Modifiers
• Schemas
• GraphiQL tool
• Express framework
• NPM libraries to build server side of GraphQL
• Build a GraphQL API
• Apollo client
• NPM libraries to build client side of GraphQL
• How to setup Apollo client

React Application Testing and Deployment
• Define Jest
• Setup Testing environment
• Add Snapshot testing
• Integrate Test Reducers
• Create Test Components
• Push Application on Git
• Create Docker for React Application

Introduction to React Native
• What is React Native
• Use of JSX elements With React Native
• The anatomy of a React Native application
• React Native installation and setup
• Running the app on Android Simulator and Android Device
• Working with Styles and Layout
• Connecting React Native to Redux

React with Redux Projects

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