ReactJS has become one of the most popular frameworks for building web applications. With its component-based architecture and declarative programming style, developers can build complex and dynamic interfaces with ease. However, as applications grow in complexity, it becomes necessary to explore more advanced concepts in ReactJS to build robust and efficient applications. In this article, we will explore some of these advanced concepts.

What is ReactJS?

ReactJS is a popular choice for building single-page applications, where the content is loaded dynamically, without requiring a page reload. ReactJS is based on a component-based architecture, which makes it easy to reuse code and develop complex UI components. 

ReactJS is also known for its declarative programming style, which allows developers to describe how a component should look and behave, without having to worry about the underlying implementation details. Overall, ReactJS has become a widely used framework for building online satta app due to its simplicity, scalability, and performance.

1) Higher-Order Components (HOC)

Higher-Order Components (HOC) is an advanced concept in ReactJS that allows developers to reuse code and simplify the process of creating components. The HOC function creates a new component with more features out of a component that is passed in as an argument. HOC is a design pattern used in ReactJS that allows developers to enhance the capabilities of existing components.

2) Hooks

Hooks are a new addition to ReactJS that allows developers to use state and other React features without writing a class. Hooks allow developers to reuse stateful logic across different components. React has built-in hooks like useState, useEffect, and useContext.

3) Custom Hooks

Custom Hooks are a powerful concept in ReactJS that allows developers to create reusable logic that can be shared across different components. Custom Hooks are similar to HOC, but they provide a way to share stateful logic and state between different components. Custom Hooks are functions that use one or more built-in hooks to create custom functionality.

4) Context

Context is a way to pass data through the component tree without having to pass props down manually at every level. Context provides a way to share data between different components without the need to pass the data through each component.

Context consists of two parts, the Provider and the Consumer. The Provider is used to create a context object that can be passed down to other components. The Consumer is used to consume the context object created by the Provider.

5) Error Boundaries

Error boundaries are a way to handle errors in ReactJS. Error boundaries are components that catch errors that occur during rendering, in lifecycle methods, and in constructors of the whole tree below them. Error boundaries do not catch errors for events, asynchronous code, and server-side rendering.

Error boundaries are useful for handling errors that occur in components that are outside the control of the developer. For example, if you are using a third-party library that is not well maintained and it throws an error, you can use an error boundary to catch the error and handle it gracefully.

6) Portals

Portals are a way to render a component outside of the current DOM hierarchy. Portals allow developers to render a component outside of the current component tree and into another part of the DOM.

7) Lazy Loading

Lazy loading is a technique that delays the loading of a component until it is needed. Lazy loading can be used to improve the performance of an application by reducing the amount of code that needs to be loaded initially.

8) Server-Side Rendering

Server-side rendering (SSR) is a technique that allows a web application to be rendered on the server before being sent to the client. SSR can be useful for improving the performance of an application by reducing the time it takes to load and display content to the user.


ReactJS is a powerful framework for building web applications, and exploring advanced concepts can help developers build robust and efficient applications. Higher-Order Components, Hooks, Custom Hooks, Context, Error Boundaries, Portals, Lazy Loading, and Server-Side Rendering are all advanced concepts that can be used to create complex and dynamic interfaces. 

By understanding these concepts, developers can build applications that are performant, maintainable, and scalable.

Read More: Building Dynamic User Interfaces with ReactJS