Difference between React.js & Next.js

What is React.js?

According to react documentation create React App is an officially supported way to create single-page React applications.

Create-React-App is a boilerplate that allows us to scaffold new React applications.

It keeps dependencies like webpack and babel inside of react-scripts.

Removing the complexity and difficulty of working with transpilers and bundlers.

What is Next.js?

Next.js is a React framework built by Zeit, and according to Next.js documentation with Next.js server rendering React applications has never been easier, no matter where your data is coming from. Next.js also supports static exporting, pre-rendering and has many more nice features like automatic building size optimization, faster developer compilation, and a preview mode. It is also open-source based on Node.js.

Advantages of React.js

1- It’s rendered client-side

Since we render Create-React-Apps on the client-side, deployment is easy. You can host your application on any file host, like S3. Client rendered apps are easier to work with and easier to reason about.

2- It ensures faster rendering

Building a high-load application it is essential to consider how the structure will impact the overall app performance. Even latest platforms and engines can’t ensure the absence of annoying bottlenecks, because DOM (document object model) is tree-structured and even small changes at the upper layer can cause awful ripples to the interface. To solve the issue Facebook development team has introduced Virtual DOM – currently, one of the benefits of using React for heavy loaded and dynamic software solutions.

3- It has react native for mobile app development

React can be boldly called a “learn once – write anywhere” library, since in both web and mobile application development it follows the same design patterns, facilitating the transition process. Using plain JavaScript and React you’ll be able to build rich UI for native apps, supported by both iOS and Android platforms.

Disadvantages of React.js

1- It’s hard to customize

There is no built-in way to customize your application. If you need to customize your Webpack configuration, your only option is to use a third-party tool like craco or eject. And once ejected, you have lost most of the benefits of using Create-React-App in the f

2- It abstracts complexity

Create-React-App works great until you have to do something that it doesn’t support. Then it gets hairy. By hiding away the babel and webpack configuration, Create-React-App makes it easy to get started. But it discourages developers from learning more about how these vital tools work.

3- It’s bad for Search engine optimization

We render Create-React-Apps on the client-side, they struggle with SEO and should not be used for e-commerce or marketing efforts.

Advantages of Next.js

1- It blazing fast

Next.js has server-side rendering and static-site generation, Next.js applications are blazing fast. Next take care of many performance optimizations for us, giving us performance as a default.

2- It’s easy to deploy

Vercel makes it easy to deploy full-stack React applications. With only a few clicks, you get up a professional deployment pipeline. This includes preview deployments and production deployments.

3- It gives us API Routes

Next.js gives us a quick and easy way to build APIs within our applications. If your application works with third-party APIs, you often need your own API to proxy requests and keep your tokens secret. Next.js’s API routes are perfect for this use case.

Disadvantages of Next.js

1- Limitation in routes

There’s only one way of dealing with routes in Next.js, and you can’t customize it. Next.js is limited to its file-based router, and dynamic routes are only possible when used with a Node.js server.

2- Migrating server side

Migrating a server-side app to Next.js is not a quick process, and depending on your project it may be too much work

3- Lack of built-in state manager

Lack of built-in state manager – therefore, if you need a state manager, you also need Redux, MobX or something like that.

Comparing server side rendering (SSR) vs. client side rendering (CSR)

Next.js is one way that you can leverage React to support server-side rendering. Likewise, Create React App is one way that you can leverage React to support client-side rendering.

There are other frameworks out there when it comes to either choice, but what we are really comparing in this post is how each rendering strategy impacts web application performance. We just happen to be using two of the more popular frameworks out there to make that comparison.

When to use Next.js?

Next.js shines when it comes to making landing pages and other marketing material.

When creating e-commerce sites, SEO is more important than ever. Thanks to server-side rendering, Next.js shines in this department.

Rendering our application on the server lifts the burden of rendering off of our clients. For users on slower devices, this can lead to much faster load times.

When to use React.js?

If your application is only available to authenticated users, it loses much of the benefits of server-side rendering. For this use case, client-rendered applications work just fine and are easier and cheaper to host.

Web applications in general benefit less from server-side rendering. They are generally used by reoccurring users, and we can use caching to give them lightning-fast load times without the cost or hassle of SSR.

Among other advantages of React.js in mobile app development, our React Native developers recite its portability and ability to reuse components, real-time reload and modular architecture, open source, and generous ecosystem. When it comes to the actual use of React Native, we can list such mobile apps as Skype, Tesla, Airbnb, and WalMart. And don’t forget about Instagram and Facebook – the actual innovators and early adopters. 

Conclusion

Next.js as a framework allows you to use React library to build pages and UI for your web app.

React.js as a library is part of a framework, the UI components part.

My opinion

In my opinion, the current version of Next.js is something that React has been missing for a long time.

It has all the functionality you need to create a ready-to-go application. Plus, the documentation is great, and it’s getting more and more popular with front-end developers.

Next.js is doing really well, but that doesn’t mean you should always use this framework.

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Difference between React.js & Next.js

What is React.js? According to react documentation create React App is an officially supported way to create single-page React applications. Create-React-App is a boilerplate that

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