How do I use ASScroll with GSAP ScrollTrigger?

ASScroll can integrate with GSAP by disabling its internal RAF loop and using GSAP's ticker, as shown in the demos. This allows smooth scroll animations without performance hits from multiple RAF loops.

What's the best touchScrollType for mobile WebGL projects?

For mobile WebGL sync without lag, use 'scrollTop' to leverage native inertia scroll with CSS prevention of resizes, or 'transform' for direct control, but note the performance trade-offs mentioned in the touch devices section.

ASScroll vs Lenis: which is better for smooth scrolling?

ASScroll offers a hybrid approach with proven touch optimization, but Lenis is actively maintained and recommended by ASScroll's author for new projects. Choose Lenis for updates or ASScroll for specific legacy use cases.

How to customize the scrollbar in ASScroll?

Disable the default scrollbar styles by setting scrollbarStyles to false and add your own CSS, or override the injected styles using the scrollbarEl and scrollbarHandleEl options for custom classes.

Can ASScroll handle horizontal scrolling?

Yes, ASScroll supports horizontal scroll configurations via the enable method with horizontalScroll set to true, allowing smooth animations for side-scrolling sections as featured in the demos.

Is ASScroll accessible for keyboard users?

Yes, it retains native browser scroll behavior, making it keyboard-friendly without overriding inputs, so pressing space in forms still works normally, unlike pure virtual scroll libraries.

Open-Awesome

asscroll

MITJavaScriptv2.0.7

A lightweight JavaScript hybrid smooth scroll library combining virtual scroll performance with native scroll reliability.

GitHub

930 stars24 forks0 contributors

What is asscroll?

ASScroll is a JavaScript library that implements a hybrid smooth scrolling solution for web pages. It merges the performance advantages of virtual scrolling with the reliability and accessibility of native browser scrolling, aiming to provide a consistent smooth scroll experience across all platforms and devices.

Target Audience

Frontend developers and creative technologists building immersive, scroll‑heavy websites, especially those integrating WebGL or complex animations where smooth scroll performance is critical.

Value Proposition

Developers choose ASScroll for its lightweight, hybrid approach that avoids common pitfalls of pure virtual scroll libraries—it remains keyboard‑accessible, handles edge cases like iframes and legacy hardware, and syncs seamlessly with WebGL on mobile without sacrificing native inertia.

Overview

Ash's Smooth Scroll 🍑

Use Cases

Best For

Adding smooth scroll to creative portfolio or agency websites
Syncing DOM and WebGL content scroll positions on mobile devices
Implementing horizontal scroll sections with smooth animation
Integrating with animation libraries like GSAP ScrollTrigger
Building touch‑friendly immersive storytelling experiences
Creating custom scrollbar designs without breaking native behavior

Not Ideal For

Projects requiring long-term maintenance and regular updates
Simple static websites without complex scroll animations or WebGL integration
Teams needing extensive community support and up-to-date documentation
Applications where server-side rendering or zero-JavaScript fallback is critical

Pros & Cons

Pros

Hybrid Scroll Engine

Blends virtual scroll performance with native scroll behavior, ensuring keyboard accessibility and handling edge cases like iframes and legacy hardware, as highlighted in the README's advantages.

Touch Device Optimization

Offers multiple touch-scroll strategies ('transform', 'scrollTop', 'none') to sync DOM and WebGL without lag on mobile, retaining native inertia scroll for a smooth experience.

External Integration Support

Allows disabling internal RAF and resize events to hook into external loops, providing better performance control and integration with libraries like GSAP.

Customizable and Lightweight

Includes a customizable scrollbar with optional CSS injection and supports horizontal scrolling, all while maintaining a non-intrusive, lightweight approach per the project philosophy.

Cons

Deprecated and Unmaintained

The author explicitly states the repo is no longer actively maintained and recommends switching to alternatives like Lenis, posing risks for bug fixes and future browser compatibility.

Scrollbar Style Flash

Custom scrollbar styles are injected via JavaScript, which can cause a brief flash of the native scrollbar before hiding, leading to potential layout shifts as noted in the README warning.

Complex Touch Configuration

Multiple touchScrollType options require careful setup and understanding, especially for WebGL sync, and may involve injected CSS that could conflict with existing styles.

Frequently Asked Questions

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