What is React Design Pattern and why is it important?
The react design pattern is useful to simplify large React apps. This helps in reducing the development burden on the React development team. React Design Patterns are typically common approaches and practices for organizing code in React development. Developers can easily create maintainable, scalable and efficient React apps.
What are the benefits of React Design pattern?
Encourage reusability:
Design patterns always come with ready-made templates and components. Thus, it saves the time and efforts of developers. It will help developers to accomplish the project within the deadline.
Enhancing code organization:
When you are surfing the web for predefined solutions to common issues. They are renowned for offering a methodical and systematic manner. The design pattern makes it simple for the developer to maintain the large react app.
Helps with Performance Optimization:
Design patterns can help you with optimizing ReactJS. Design patterns like memory are the most appropriate choice. Design patterns can easily contribute to better app performance.
Promotes maintainability:
There are high chances for the code to become modular and decoupled from the ReactJS design pattern. Separation of concerns makes it easy to maintain. Any change in one part of the app can also impact the other part. The design patterns also promote the code documents that will help developers to easily understand the codebase.
Some of the leading React Design pattern:
HOC (Higher Order Component)
It is one of the most advanced techniques in React which is useful for reusing components logic. Therefore, HOCs are not part of the React API. In a nutshell, HOC result from React’s compositional nature.
The HOC is a JavaScript function and it takes a component as an argument and returns the component. This is done after injecting or adding additional data. The higher order component fundamental is always based on react’s nature. Most of the popular react frameworks use the advanced React pattern like Connect from Redux.
import React, { Component } from 'react';
const higherOrderComponent = (WrappedComponent) => {
return class EnhancedComponent extends Component {
// Add additional functionality or state here
render() {
// Render the WrappedComponent with added props or behavior
return <WrappedComponent {...this.props} {...additionalProps} />;
}
};
};
export default higherOrderComponent;
Provider Pattern:
The purpose of the provider pattern is to share global data across various components of the React component tree. It has a provider component that holds global data. It can then pass down the component tree in the app via its custom hook. The pattern can also do React integrations like React-Redux and MobX. Here we need to understand React’s context API.
How Design Pattern in the React help in avoiding Prop drilling?
React developers mostly face the Prop drilling issue. It happens when React App data is passed down to two different components. It then becomes a concern when the unrelated component shares the data through the prop and needs to be passed down to the real component.
The design pattern in React is an ideal solution to this issue. Developers can easily store data in a centralized location. This is known as React Context object that uses the redux store and React Context API. The redux store and the context provider can easily pass the data directly to any component without props drilling.
Presentational and container component patterns:
We can easily distinguish between different concerns like other features of the component and complicated stateful logic.
The react hook enables us to divide the concerns naturally so a hook pattern is advised over the presentational and container components
React Hooks Design Patterns:
Hooks were introduced in the React 16.8 version. They also brought a revolution to the way developers approach building React components. These hooks enable React functional components to get access to common React features. This hikes the potential of the functional components because they now perform the entire task.
The purpose react hooks serve is mostly similar to the container component design pattern. They are sometimes a little bit complicated to deal with when the arguments are arrays, objects and functions. On the other hand, custom hooks are easy to use and offer many benefits to the developer.
You must understand that hook patterns offer a cleaner and learner API to solve the problem. This hook keeps track of the hovering state. There are three built-in hooks.
useState – It allows functional components to manage and update state variables.
useRef – It helps in creating a ref to the component we track
useEffect – It is put into action. We may also add an event listener to the component for monitoring the hovering status.
Compound Component Pattern:
The common react design pattern is react compound component pattern that helps in establishing seamless communication. This connection is between parent and children component through flexible API. The parent component can interact using design pattern.
What is compound component?
Compound component in react is defined as a pattern that encloses the behavior of component group and the state. It does enclosing while rendering control of its variables to the external user.
For example,
We are here creating a drop down menu using <select> and <option> tags in the HTML
<select>
<option value =”Red”>Red</option>
<option value =”Orange”>Orange</option>
<option value =”Green”>Green</option>
</select> Here the <select> tag handle the state of UI and the <option>tags are set as per how the <select> element will work.
Render Prop Pattern:
Utilizing the render prop pattern involves passing components as properties to other components. Those components provided as properties can also transmit properties back to the components receiving them. It’s important to grasp that render props simplify the reuse of logic across various components.
Formik, downshift and React router are some of the popular libraries that make use of render props. Render props allow us to share the same state across different components. You can easily use a function prop to identify what to render in this design pattern of React. There is no requirement of hardcoding the logic inside every component.
Controlled components:
Web forms are a frequent necessity in many applications, and React introduces controlled components as its solution for managing form state.
Controlled components receive their state via props and can report any modifications using callback functions such as onChange.
Parent component handle the callback and managing its own state to control it. New values are then passed to the controlled component in form of props. React forms support for both controlled and uncontrolled components by default.
Controlled component is like following code snippet.
<input type = “text” value = {value} onChange = {handleChange}/> Conditional Rendering:
Conditions are the foremost tool in the software development task. In the process of writing React components, the need often arises to render certain JSX code based on the state. It is mainly accomplished through conditional rendering.
Conditional rendering allows you to develop distinct components as per your needs. It only renders the ones that the application actually needs.
Conditional rendering is useful to display different messages to the user. This message will be LoggedIn as a subject to the value of the prop.
Last word:
So here we end with proper understanding of react design pattern that enable react developers to create robust, scalable and secure react apps. You must understand these react patterns to follow the best practices and optimize the react project while applying the right pattern at the right place.