React 18: Staying Ahead with the Latest Updates
                     React 18 Staying 
Ahead with the 
Latest Updates
https://www.braininventory.in/
Quick Summary:  React v18.0 has been released! It’s been two months since 
the last major release, so what can we expect from this new version of React? 
As expected, React 18 features new server rendering capabilities, Hooks, and 
React Elements. These are exciting changes that will help developers create 
user experiences that are faster than ever before.
In summary, it will pose a significant challenge to the TezJS framework, which 
is also responsible for the construction of UI components.
2
React is Design Oriented
React 18 delivers the new React Shallow Rendering. It lets you 
declaratively render tree fragments without having to worry about 
what happens when the data changes. That frees you up to focus on 
writing React components that produce the output for their parent 
nodes, instead of handling the details of every possible change.
React v18 is the newest addition to the React family. It has an amazing 
UI focus that catches the attention of designers and development 
teams. Therefore, they embrace React v18, highlight it in their 
presentation, and actively collaborate with designers and other UI/UX 
specialists to improve the library.
3
What is React 18 Concurrent Mode?
Concurrent is the most important feature of React v18.0.0 that has 
enabled people to use React without worrying about the performance 
issues related to the significant memory consumption of the new 
version. Concurrent is a background task in React, which does not mess 
with your UI components. All it basically does is that it create a separate 
instance for the DOM nodes instead of creating multiple versions of a 
single node. This enables you to save the memory significantly without 
worrying about performance issues like before.
4
React has organized itself as one of the best solutions to achieve a modern 
user experience. It has made it simple for developers to build amazing 
applications that offer a seamless user experience. Its intuitive features make it 
highly flexible to fit into any kind of application. This has made React 
developers highly sought after in the industry.
React rendering is a process of undertaking UI updates in an interval. Imagine 
you are adding some text to your page, as soon as you touch the Keyboard, 
React scrolls everything behind the text and omits the previous content in 
front. This is what react does — it maintains the consistency in UI irrespective 
of unplanned interruptions.
5
So, you’ve heard that there’s a new version of React. The big news is React 
Fiber, and the ability to pre-cache rendering for smooth transitions. But 
another change is the introduction of , which brings react-router’s 
 method to everyone. It’s a flexible way to create a seamless 
transition between two screens, in the same tab or a different tab.
6
New Suspense Features
The goal of react-suspense is to help developers transition from code 
that uses dynamic imports today (code that does not take advantage of 
React’s dynamic import feature) to code that uses them in the future. 
This will make it easier for developers to update their components to 
use Suspense when it is released. The react-suspense package was 
created by Michael Jackson as part of the Facebook React team’s work 
on Suspense, which is part of their ongoing effort to make rendering 
asynchronous and non-blocking by default.
7
React Server Side Rendering is a process where we can execute ReactJS code 
on the server side. This process allows us to enhance our user experience by 
giving them content faster. It also helps search engines crawl your website 
quicker and easier. Re-rendering the whole page would ensure up-to-date 
content being rendered for search engine indexing.
One of the major changes that React version 18 brings is the way it handles 
suspense. However, in the migration process to React version 18, we would 
need to make very few changes to our code so as to keep everything working 
(or close to working) as before.
8
Streaming Server Rendering
In React 18, this situation is improved. Server-side rendering now allows 
for incremental updates: components will render asynchronously to 
state changes, and when all of the components have been rendered, an 
update callback can be invoked to re-render the main page. By re-
rendering as few components as possible once JavaScript is available, 
server-side rendering ensures a smoother experience for your users, 
even in complex applications with many slow components.
9
React Suspense was introduced in React v.18. It allows us to load 
components asynchronously. With this library, we can pause rendering by 
wrapping our (Suspense) tag around an async component and the 
component will not be loaded until it’s ready. This means you can load an 
image, video, or even a component after everything else has already been 
rendered on the screen. Further, we can show a loading animation for any 
UI elements that are yet to be seen by the user.
10
Automatic Batching
Batching is an integral part of React apps and components for grouping 
state updates with the help of inbuilt hooks and event handlers. This 
will help prevent components from re-rendering for all state 
modifications unnecessarily, resulting in improved overall speed (and 
performance) of a component. If you have been using React, you know 
that this wasn’t possible until the release of React 17. But with the 
latest version – React 18 – the framework has added support for 
automatic batching, enabling you to improve performance even further.
11
Allows you to batch state updates from createRoot. This includes native 
event handlers, asynchronous operations, and intervals. Makes use of bulk 
and partial requests to reduce the number of calls on the server. Makes 
integration with Restler support tokens ultra-easy.
12
Stopping Automatic Batching with 
flushSync()
React 18 comes with a new method called ReactDOM.flushSync() that helps 
in synchronizing an arbitrary number of React updates to build output and 
DOM response at the same time. However, for this method to work, it 
requires that any code in your app must not read anything straight from the 
DOM during an update. In other words, if you are using “refs”, event 
handlers, browsers, or libraries that read the scroll position, dimensions, or 
other things straight from the DOM then you need to disable automatic 
batching first by calling setAutoBatching(false) before calling flushSync().
13
Transition
React recently introduced a new concept called Transition to allow the 
application to prioritize updates that the developer expects consumers 
to interact with more frequently. The developer can specify how long an 
update should take in real-world time to trigger this transition. These 
urgent updates that intersect with the transition are prioritized ahead of 
others when the updates occur. Transition was added to React to aid 
developers who want to emphasize user experience within applications. 
Especially, it’s useful when incorporating dynamic or content-based 
components into an application such as news feeds.
14
New Client and Server Rendering APIs
React 18 has redesigned the APIs to render on the client and server 
sides. Now, all users can continue utilizing the old React 17 APIs while 
upgrading to the new React 18 APIs. This gives us the opportunity to 
have new features added to the mix. Thanks to the Webpack 4 update, 
we can be confident that our bundle size will go down significantly.
15
New Strict Mode Behaviors
Strict mode was introduced to the React community in the 16.3 version. 
It helps to identify the code patterns that could impact the performance 
of concurrent rendering APIs and displays error messages or code 
suggestions to help developers improve their code
16
New Hooks
React Hooks are the newest trending topic in the world of JavaScript 
frameworks. React developers and UI designers have been waiting a 
long time to get this update. In fact, Facebook itself has been working 
on developing the hooks for 10 months. The primary concept behind 
the update is that it was introduced because of the functional 
components used by React. In their words, they wanted to provide 
more options for developers to write software. Moreover, they wanted 
to give developers more control over the code needed to accomplish 
things like animations or state management.
17
Conclusion 
React 18 brings a host of game-changing features and enhancements 
to the table, revolutionizing the development experience, boosting 
performance, and unlocking new horizons for crafting cutting-edge 
web applications. With Concurrent Mode, concurrent rendering takes 
center stage, resulting in a highly responsive user interface. 
Meanwhile, React Server Components act as a vital link between 
server-side and client-side rendering, paving the way for performance 
optimization and decreased client-side processing.
18
In order to get the most out of React 18, you need to go back to your existing 
workflows and convert them to this modern version. We will help you with that 
and make sure you don’t miss a beat on your work. Our React JS developers 
offer the quality support and expertise required to make this transition 
smoothly. Contact Brain Inventory to learn more about our IT Services!
19
BRIAN INVENTORY
+91-810-956-1401
[email protected]
https://www.braininventory.in/
20