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Reconciler-Using-DOM

Introduction

This project offers a simplified React reconciliation algorithm demonstration within a dynamic Todo List application. It highlights diff calculation and DOM manipulation for element addition, update, and removal, mirroring React and ReactDOM's core functions.

Installation

Backend

git clone https://github.com/starvader13/Reconciler-Using-DOM.git
cd Reconciler-Using-DOM/backend
npm install
nodemon server.js

Frontend

Open the frontend/index.html file in a web browser to interact with the application. The frontend will automatically fetch updates from the backend every 5 seconds, reflecting any changes in the todo list.

Understanding the Code

Project-Root Structure

project-root
├── backend
│ └── server.js # Node.js server that generates random todos
├── frontend
│ ├── index.html # Main HTML file with a div container for todos
│ └── script.js # Contains logic for DOM updates and state management
└── README.md # Documentation of the project

Backend

The backend is a HTTP express server that simulates a dynamic source of todo items, each represented with a title, description, and id.

Frontend

  • index.html: A single div element with the id todos acts as the container for dynamically added todo elements.
  • script.js:
    • Reconciliation and State Management: The updateState function in script.js showcases a simplified version of React's reconciliation process, managing state transitions and efficient DOM updates.
    • DOM Operations: Functions addTodoToDom, removeTodoFromDom, and updateTodoInDom provide insights into manual DOM manipulation strategies, forming the basis for understanding frameworks like React.