When it comes to smooth and seamless web development performance, many front-end developers go with the ReactJS for its excellent features and user interface designs. Though ReactJS is a front end JavaScript library, adding ReactJS library doesn’t provide you enough reasons to use in your applications. It may lead to bugs, errors, lags, and reusability problems as a developer you will never want to use mediocre codes over and over again.
In this scenario, with ReactJS, you can develop faster and reliable apps. Developers can easily manage the code issues. Although, since its virtual DOM is famous for effectively rendering components, it’s still possible to have performance issues in medium to large web applications.
In this article, we will let you know how you can optimize your ReactJS application performance along with sharing few tools and best practices. And if you are looking to optimize your ReactJS application, you should hire ReactJS developer from The One Technologies.
How ReactJS Works?
ReactJS is a JavaScript-based library offering Virtual DOM to developers. Using ReactJS, you can create an effective hierarchy of UI functions. This will help you deliver excellent user experience. It uses a tree-like structure for UI components. Each component has functions rendered to users. React keeps track of each user’s request and interaction with the system. If you make any changes in the new UI, then it compares them with the old UI and re-renders the UI with changes that are needed despite the whole UI.
React provides faster development with the help of virtual DOM. Therefore, many companies and big organizations are choosing ReactJS Development company over others.
Top Tools to Optimize Your ReactJS App Performance
1) Using React.PureComponents
With JavaScript, you can modify the state of variables. These variables are the basis for programming functions. When the React component renders the same output on every state of variables, it’s considerably pure. Therefore, ReactJS comes with a class of components and this is known as React.PureComponents.
With ShouldComponentUpdate, it allows you to have a control on the function automatically. If the states and props are the same from last rendering then they are known as pure components. This means, these components will compare and know whether the states and props are the same or not. If they are the same, it will not re-render for updates.
2) Immutable Data Structures
Immutable data is not an architecture or design pattern. It’s an opinionated way of developing code. This way, you can think about how you structure your application data flow. In short, data immutability is a practice that resolves around a strict unidirectional data flow.
Immutable data can be applied to the design of front-end apps. You can get many benefits like:
Zero side-effects
Easy to create, test, and use
Prevents temporal coupling
Easy to track changes
When it comes to React, we maintain the internal state of components, and changes to the state can cause the component to re-render.
React builds and maintains an internal representation of the rendered Virtual DOM. When there’s some changes in props and states of components, React compares the old UI with the new UI. when they are not equal, React will update the DOM.
3) Use React.Fragments to Avoid Additional HTML Element Wrappers
With React.Fragments, you can group a list of children without adding an extra node.
class Comments extends React.PureComponent{
render() {
return (
<React.Fragment>
<h1>Comment Title</h1>
<p>comments</p>
<p>comment time</p>
</React.Fragment>
);
}
}
But wait! You can do more with its alternate and more concise syntax using React.fragments:
class Comments extends React.PureComponent{
render() {
return (
<>
<h1>Comment Title</h1>
<p>comments</p>
<p>comment time</p>
</>
);
}
}
4) Using JSX Elements
ReactJS allows the developer to use JSX elements like values. Hence, they can use inline and constant elements. By reducing the calls to React.createClass, you can scale your values. You can also use the React inline elements to convert JSX components into the object literals.
To leverage the above functionality, you need to configure the following code in package.json.
"label": {
"env": {
"production": {
"plugins": [
"transform-react-constant-elements",
"transform-react-inline-elements"
]
}
}
},
5) Using React.Lazy
Lazy loading is one of the most preferred techniques to optimize your React applications.
Let’s give you an example of an eCommerce application. In this app, you want your users to see a payment option when requested by them. You can even render images or video only, when they send a request for them. It’s an appropriate way to speed up your apps.
Hence, developers cna easily load essential components of the app on the request of users using React.Lazy. It can reduce the loading time of applications. It uses a callback function parameter. Now, the component file is loaded with an import() syntax.
Here, you can use the code for Lazy loading.
// MyComponent.js
class MyComponent extends Component{
render() {
return (<div>MyComponent</div>)
}
}
const MyComponent = React.lazy(()=>import('./MyComponent.js'))
function App() {
return (<div><MyComponent /></div>)
}
6) Using React.Suspense
Sometimes when a user sends a request for an image or video or any other component, it occurs a time lag. But with React.Suspense, you can represent feedback to users that there will be a time lag.
Since the screen freezes during the lag, it lets users know of what’s coming and can ensure user engagement. Here, you can use the code for React.Suspense.
// MyComponent.js
const MyComponent = React.lazy(()=>import('./component.js'))
function App() {
return (
<div>
<Suspense fallback={<div>loading ..</div>}>
<MyComponent />
</Suspense>
</div>)
}
Conclusion
If you are developing a ReactJS app, without the help of a professional ReactJS Development Company can be an error to regret. To craft and deliver feature-rich customer experience, you need to push it a bit harder. You can find many components, states, props, and other codes that can run on the app easily. But they can slow down your app and force down to crash.
So, if you wish to track all the updates, unnecessary codes, variables, and components, then choose the suitable and perfect optimization tools for your ReactJS app. These tools can certainly help your app perform faster and boost your business.
If you are looking to optimize your ReactJS app, then feel free to hire ReactJS developer from us or share your views in the comment section.
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