Why ReactJS has Become an Integral Part of the Digital World

ReactJS is a Meta framework developed in 2013, essentially made to build User Interfaces for web and mobile applications. It (updated to advanced versions over time) is so popular with front-end developers that it has become an integral part of the digital world today.

ReactJS is one of the most sought-after libraries because it enables developers to build complex websites and applications quickly and easily. Its powerful features support efficient interface rendering and allow developers to separate the code into reusable components. It offers simplicity, modularity, scalability, and stability, making it a popular choice.

How React Has Increased the Growth Potential of Fintech Companies

The recent pandemic compelled people to switch to a digital lifestyle. As people began purchasing online and conducting business on web platforms more and more, the need and demand for online transactions spiked. The banking and financial industry was propelled toward web-based innovation and ReactJS became the lynchpin of the financial technology (FinTech) revolution.

Online banking services, e-wallets, and web apps for mobile payments, insurance, asset management, and other monetary services are customer-centric innovations. Whether the user is a high-net-worth individual or merely any citizen, every fintech consumer’s experience and feedback will impact the company and its product’s success. For example, when an individual uses a banking app for a quick transaction, seeing it reflected in the account balance inquiries in real-time, without an error,  immediately establishes faith in the bank.

The Deloitte Insights on digital banking behaviors and channel usage suggest today’s consumers expect financial institutions to act and interact more like top technology brands. They need to be able to quickly deliver easy-to-use, highly tailored digital services to address changing consumer and business preferences, especially if they wish to distinguish themselves from their competitors.

With ReactJS, front-end developers can promise optimal quality, easy-to-navigate apps, and websites. A simple and comprehensible user interface, quick-to-load pages, and secure & fast data processing are essential features that React lends to FinTech product development. By reducing development time and increasing the scalability of FinTech products or web applications, ReactJS has contributed to accelerating the industry’s growth.

How React Supports E-Commerce Experiences

The modern e-commerce environment has been gaining traction due to attractive and creative web applications for a while now. We can safely say that ReactJS is the secret sauce that has helped many companies stay ahead of the e-commerce curve.

Whether it is Business-to-Business (B2B) or Business-to-Consumer (B2C), Consumer-to-Consumer (C2C), or any other type of business model on the Internet, the website or app is the crucial bridge between the customers and products or services. The user experience has to be dynamic if you wish to gain customer loyalty.

Sales depend on how enticing the app and/or site looks. The more user-friendly it is, the more visitors will get converted into customers. During an online shopping experience, the customer expects ease of interaction with online catalogs and a smooth shopping cart or real-time checkout experience, which increases repeat value for customers.

ReactJS is the most effective tool for developing high-quality e-commerce user interfaces. It not only provides a library of reusable components and templates, but its high-speed rendering also makes updating new features to the websites and apps very convenient. With React, you can keep pace with the rapidly evolving industry where innovation is paramount. The ReactJS framework facilitates compatibility with any back-end system. It enhances the capabilities of your e-commerce web applications, assuring a superb customer experience.

How React is Shaping eLearning, Medtech, and More …  

ReactJS has been a game-changer for many industries. It has made a largely positive impact on e-learning and Medtech sectors, among other verticals.

When academic material became available for interactive distance learning on the Internet, the education industry entered into a new era. Virtual lessons became accessible online for individual students, schools, universities, and government training centers too. Hosted on websites and in the cloud, dissemination of education through desktop and mobile applications started.

In education technology (EdTech), ReactJS can help present all the interactive course content in a highly-creative manner. Top e-learning apps and e-marketplaces, virtual classrooms, and more are created with the help of ReactJS. The most popular feature of ReactJS is its reusable components, which help develop highly-responsive websites and applications without having to start from scratch each time. ReactJS is the key script used in complex coding for generating a seamless educational session. ReactJS framework is designed to help front-end developers save a lot of time and effort while building a reliable digital product. The more engaging and user-friendly course content, the more subscriptions for the e-learning material. It’s a simple equation!

On the other hand, in the medical technology (MedTech) industry, React is being used to develop patient portals, healthcare products, medical consultation dashboards, diet & fitness apps, electronic health records (EHRs), medical billing & coding software, medical image processing software, and more. The success of a modern medical and healthcare app depends on its accessibility, even in unstable or slow Internet connection areas.

Trust and reliability are everything in e-healthcare. That is why React has become a popular choice for MedTech developers. It delivers easy-to-understand interfaces, making the apps user-friendly and convenient for all ages. React-based coding assists greatly in the security of your sensitive health or medical data. ReactJS ensures stability, flexibility, and efficiency of web apps and has helped to improve the overall quality of “care” for MedTech consumers and patients.

From Fortune 500s to new-age start-ups, the number of businesses lining up to leverage React is growing by the minute. Quick app-load time and incredible UI performance are the salient features that React brings to the table, making it the most sought-after open-source JavaScript library.

Why You Should Be Thinking of Integrating React into Your Business Strategy

In the digital world, where competition is growing thicker than ever, User Experience is everything. Launching a digital product or going digital with your company’s services requires seamless performance and agility in the software. ReactJS brings flexibility and finesse to website and application development. The ease of reusable components facilitates a faster turnaround time for your development team. In record time, ReactJS framework can deliver high-performance cross-platform apps that are astutely aligned with your business goals.

The React team at MetaSys makes the best use of all the new exciting features of React like React Hooks, React Bootstrap, React Query, React Redux and React Router to build complex web and mobile applications. We create engaging web applications, Opt for our Reactjs development service now!

How React Query Enhances App Performance

React Query makes it possible to replace several lines of complicated code from a React application with just a few lines of code. This makes application maintenance and the addition of new features on top of the existing ones easier. The user experience is more responsive and quicker than before. It also helps to increase memory performance from an application perspective.

React Query in Action

If we look at the code for React Query, at the root level of the project, it provides a “QueryClientProvider” as a wrapper that handles and manages global data-fetching and caching.

React Query provides multiple hooks that connect with its global state controller and returns a Promise object for fetching/caching the server-side data. It calls the API client method to fetch/update/delete/create server-side data and also manages server states such as data, error, failurecount, isError, isIdle, isLoading, isPreviousData, isFetchedAfterMount, isFetching, isStale, isSuccess, refetch, remove, status.

The useQuery hook has multiple options so developers can pass them to customize the hook to meet their project needs. It has the “enabled” option, a powerful option that actually provides multiple features such as-

• an option to run multiple queries in parallel or even synchronously i.e., on the basis of the previous query execution;
• turning the queries on or off based on the functionality;
• sorting and filtering features in the queries to help improve performance; and
• an option to wait for inputs from the user; you can disable the query for any of the use-case.

React Query allows developers to create custom hooks based on their project requirements using React Query hooks. This feature keeps the code more generalized.

It provides multiple fetching features such as:

• refetching the data on window focus;
• retrying the query if an error occurs; and
• fetching the data on updating or deleting of the records. With this, the list is always up to date after “update” and “delete” actions.

Every query has four main statuses – idle, loading, error, and success. Based on these, React Query returns the server-side states for handling each query. And with those states, developers can build a view. That means it displays the loading view until the loading state is enabled. It correctly handles errors based on error states. It displays the data or processes the data, then shows the normalized data depending on the successor states.

React Query also offers the best ways to handle data pagination. It provides infiniteQuery and mutationQuery options for paginating the data properly, depending on what the users require.

It also helps resolve issues arising out of asynchronous server-side data handling. Before React Query, developers had to write custom code for handling asynchronous server-side data. React Query has solved this issue. Additionally, it integrates well with the react-testing-library, providing appropriate code coverage too.

In a React application, we can pass data from parent component to child components using the prop. However, this is limited to certain type of properties such as Theme, locale preference, etc., which need to be used at global level in the application. With React Context, we can use the data or props without explicitly passing them as props to the component.

Context has three main elements. We need to understand these elements to utilize Context to the fullest.

1. Context Object – The Context object is designed to share data globally in the application.
2. Context Provider – The Context object comes with a provider that can be used to consume Context data in the React component.
3. Context Consumer – The Context Consumer is wrapped inside the Context provider, and it is used to get access to the Context data.

In this article, let us see how to create a Theme Context using typescript step by step.

1.Create Theme Context Object. Export ThemeContext and set the Context default value to ‘undefined’.

2.Create the Theme object by using two Themes, for instance, here we are going to use ‘dark’ and ‘light’.

3.Create Theme Context provider.

4.We created the Theme Context Provider by setting the Default Theme and function to change the Theme.

5.Subscribe Theme Context by wrapping the component with Context provider.

6.Use or set the Context data as shown in the screenshot below.

The concept of Context is simple yet effective. In this article, we covered how to use Context in the React Application with Theme Context example using TypeScript.

Should you have any queries, please contact MetaSys Software React experts, who have abundant experience in engineering applications using latest dev-tools such as React-Redux, React Hooks, React Router, React Bootstrap, etc.

You can reach out to us with any coding queries too! We would be happy to help!

Happy Coding!

To illustrate the advantages of this approach, have a look at the UI structure shown below.

Let’s say the functionality required is that when a user interacts with the big component, the application has to update the small component and the header. In other words, we need to sync the header and small component as well as manage the states of all the other components. Without a state management library such as the one provided by Redux, coding this implementation can easily become very complicated.

Using the state functionality in React allows only the use of local, component level states.

You can store the states using setState method, and fetch the stored state using state.[STATE_NAME]. However, these states are local, and only available within the class component in which it is declared.

To store the states at the application level, i.e. the global level, in order to access them from different components, we can use React-Redux.

Let’s see how React-Redux works

You will see three main elements in the Redux architecture – Store, Dispatch Actions and Reducers.

Store: holds the states at the application level, and allows any component to get data from the store in the form of Redux States.

Dispatch Action: a function of the Redux Store to trigger a state change.

Reducers: It handles the value change in Redux State.

How to configure React Redux in a React JS project –

The following packages are needed to be installed to configure  Redux in the project –

1. Redux: the core package of React Redux.
2. React-redux: needed for React bindings.
3. Redux-thunk: a middleware which allows you to call action creators, and which returns a function instead of the action object.

These dependencies can be installed by using the following NPM command –
“npm install redux react-redux redux-thunk –save”

After these dependencies are installed, a store can be created and initialized with data/null values as per the requirements. This can be done by creating the file store.js in the project.

First however, you need to create reducer.js to handle the next states. Below is the example of reducer.js to initialize the state. Here, it is just returning the initial value from the reducer.

Below is a slightly more complex example of the code in reducer.js to update the states based on the action executed from the component.

In the above example, it adds the data to the state upon the dispatch action (ADD_DATA). Now let’s create the action to dispatch. You can create a file with the name action.js, that contains the code shown below.

Once the action is created, now you can create a store and then connect the store to the application. You can create a file with the name store.js, that contains the code shown below.

To connect the store to the application, you will have to use the entry point. In the index.js (i.e. entry point of the app), import the store as shown below –

These are all the Redux configurations for an application. Refer the the image below to use it in your component –

React Redux can handle large amounts of data at the application level with cleaner components and is particularly useful for big applications.

Without redux, to transfer data from component 1 to component 5, you need to pass it through middle components. This increases the props for components and creates more complexity and the components are less clean.

Using React-Redux, you can get or set the data to the store from any of the components directly by mapping the redux states to component props. In this case, you do not need to pass props to the middle components. This allows for much cleaner components and increased clarity in the code.

If you are looking to build a mobile or web application using React technology, then please feel free to contact us.

Now, let’s understand – what is TypeScript?

TypeScript is an open-source programming language maintained and developed by Microsoft since 2012. It is a set of tools which uses a strongly typed, object-oriented and compiled language. It is an extended JavaScript programming language with additional features. When a new developer joins the team and uses any existing component of the project, he can easily understand its props with their specific types.

According to GitHub, TypeScript is one of the fastest-growing technologies. It is downloaded 31 Million times per month. Developer survey results of 2019 on stack overflow, place TypeScript at 10th position for “Most popular technology” and 3rd position for “Most Loved technology”. So as a new developer, it is not something which you can ignore.

When to use TypeScript?

Development teams working together on coding projects can struggle with code complexity, particularly as projects increase in size. TypeScript is recommended for large projects as it is the best option for maintaining code quality. It enables self-explanatory code right from the initial stages of the project.

Some of the significant features of TypeScript are listed below:

1. Static typing –
The static typing feature is one of the common reasons for developers to migrate their existing project from JavaScript to TypeScript. You can add data-types for variables, functions, properties, interfaces, etc, and it indicates warnings and errors regarding data type issues even before the compilation. I think that’s a wonderful feature because as a young developer, I faced a lot of problems while doing scripting.

Note: Static typing is optional.

2. Object-oriented –
TypeScript supports object-oriented programming, i.e. you can use class, Inheritance, Encapsulation, and Polymorphism.

3. Code suggestion –
It is best to use TypeScript with the IDEs since IDEs provide features such as IntelliSense and error highlighting.
If a developer wants to access the component props {this.props.}, then Typescript suggests all the available props, and highlights any typos.

4. Display errors/warnings ASAP –
TypeScript highlights the errors immediately.

5. TypeScript is portable –
All companies have a different kind of IT infrastructure set-up, with different operating systems and browsers. The advantage of TypeScript is that it is a superset of Javascript, meaning it can run on any environment that Javascript runs on. It is portable across operating systems and browsers.

How to create a new React JS project enabled by Typescript? –
To create a new project which is enabled by Typescript, you can use the following command.
e.g. npx create-react-app <> –TypeScript

It creates tsconfig.json which has typescript configurations.
tsconfig.json
{
“compilerOptions”: {
“target”: “es5”,
“lib”: [
“dom”,
“dom.iterable”,
“esnext”
],
“allowJs”: true,
“skipLibCheck”: true,
“esModuleInterop”: true,
“allowSyntheticDefaultImports”: true,
“strict”: true,
“forceConsistentCasingInFileNames”: true,
“module”: “esnext”,
“moduleResolution”: “node”,
“resolveJsonModule”: true,
“isolatedModules”: true,
“noEmit”: true,
“jsx”: “react”
},
“include”: [
“src”
]
}

Here, you can find the set of rules defined for the project. You can also modify or add more constraints if you want.

How to add TypeScript to the existing React JS project?
To add TypeScript in the existing project, you will have to install TypeScript and other required types externally
e.g. npm install –save TypeScript @types/node @types/react @types/jest @types/react-dom

After this, two changes are needed in the projects:
– First, rename all the “.js” file to “.ts” or “.tsx”
– Secondly, create a tsconfig.json in the root directory with the set of rules mentioned in the first step.

Happy Coding!!