mo · js is a motion graphics library for the web that provides built-in components and tools for creating animations in JavaScript.
The library addresses the need for precise, performant animation control on the web by offering a declarative API that gives developers complete control over motion graphics. Rather than relying on CSS animations or imperative animation frameworks, mo · js uses a component-based approach with built-in elements like shapes, swirls, bursts, and stagger effects. The library is designed to be fast and retina-ready, making it suitable for creating delightful user experiences with visually rich animations.
Developers should choose this tool if they need fine-grained control over animation timing, easing, and composition. It works well for projects requiring custom motion graphics, icon animations, or interactive design elements where a declarative syntax makes animation logic clearer than imperative alternatives. The library supports both bundler-based installation through NPM and CDN inclusion, making it flexible for different project setups. The tool distinguishes itself through its modular architecture and the availability of companion tools like a player, curve editor, and timeline editor for crafting animations in a natural way.
Work in the issue tracker centers on core functionality, feature development, and dependency management, indicating active maintenance focused on the library's foundation and expanding its capabilities.
