Better-scroll is a JavaScript scroll library and touch interaction engine designed to create high-performance scrollable areas in web browsers. It functions as a modular UI component framework that provides the foundation for building complex scrollable elements.
The library is distinguished by a plugin-based architecture that allows the injection of custom methods and event hooks. This system enables the creation of specialized interface components such as carousel sliders, scrollable picker inputs, and draggable element systems.
The project covers a wide range of mobile web interaction patterns, including pull-to-refresh workflows, infinite scrolling, and pinch-and-scale zooming. It includes a smooth scrolling engine with inertia and rebound effects, alongside a DOM content observer that monitors size changes to update scrollable dimensions. Technical capabilities also encompass nested scroll coordination and mouse wheel mapping for consistent cross-platform behavior.