Nov 17, 2023

Mastering React: Building Your Own Framework from Scratch

Hear from Anurag Singh (Software Engineer at DealsPlus) as he talks about React—a powerhouse in the world of web development, renowned for its efficiency and versatility.
ChayanTechnical Content Writer

Today, we're embarking on an exciting journey to understand the inner workings of React and build our very own custom framework. Get ready to explore the captivating world of custom components, the virtual DOM, and the magic of state management.

Understanding the Basics

Setting Up Your Environment

Begin by preparing your development environment. Create a project structure, manage dependencies with Parcel and Babel, and transpile JSX into React.createElement. This sets the stage for exploring the world of custom React components.

Creating the 'createElement' Function

Delve into the 'createElement' function, the core of React. Build your version to grasp how React handles element types, properties, and children. This function serves as a bridge between the framework and your code, revealing the underlying mechanics.

The Role of the Virtual DOM

Explore how React handles the virtual DOM to enhance performance, ensuring seamless application execution.

Rendering Your Elements

Uncover the significance of the 'render' function, selecting the HTML root element, and building and appending DOM elements. Gain insights into making your components visible on a web page.

Handling Components

Custom components are central to React. Define component functions and enable their rendering. Learn to pass and access props, laying the foundation for creating complex structures by combining components.

Rendering Lists

Master the art of rendering lists dynamically. Work with arrays, map over them, and render lists of elements from simple to complex structures.

Creating Reusable Components

Construct a course card component, add CSS styling, and effortlessly render multiple course cards. Learn to create components that enhance code efficiency and maintainability.

State and Hooks

Explore the core concept of state in React, facilitating dynamic updates. Manage state changes and reflect them in the user interface. This guide provides an introduction, with an advanced exploration of creating a custom 'useState' hook available in a dedicated video.

To Conclude

The journey into building a React framework offers valuable insights into its inner workings. From custom components to the virtual DOM, rendering lists, and state management, this overview provides a foundational understanding.

Mastering React is an ongoing adventure, and this guide marks an exciting first step. The possibilities are limitless, and there's always more to explore on your path to React proficiency.

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