High-Performance Virtualized Data Table in Vanilla JS

A fast, efficient tabular data viewer built with pure JavaScript and TypeScript that handles large datasets with ease using virtualization and virtual scrolling. No frameworks, no magic—just straightforward, high-performance code.

Features

• Virtual scrolling to render only visible rows and columns
• Custom scrollbar for smooth navigation and control
• Cell content updated via textContent for minimal reflows
• Fixed-size rows and columns for predictable layouts
• Lightweight, framework-free implementation
• Suitable for analytics dashboards, admin panels, log viewers, and large data visualization

Demo

Try the live demo here: Live Demo Link

Installation or setup

Clone the repo and npm install and run dev server.