interact.js is a JavaScript library that provides drag and drop, resizing, and multi-touch gesture handling with inertia and snapping for modern browsers and Internet Explorer 9 and above.
The library solves the problem of implementing complex pointer interactions across diverse devices and browsers. It handles drag operations, element resizing, and multi-touch gestures while supporting physics-based features like inertia and snap-to-grid positioning. The tool works as a standalone library that does not modify the DOM except to change the cursor, allowing developers to maintain full control over their interface behavior.
Developers should choose this tool when building interactive web applications that require sophisticated gesture support across desktop and mobile platforms. It suits projects needing multi-touch capabilities, physics-based animations, or precise control over drag and resize interactions. The library works with SVG elements and maintains broad browser compatibility, making it appropriate for applications targeting older environments alongside modern ones.
The project maintains active development with passing builds and test coverage tracking. The codebase is written in TypeScript with type definitions included in the npm package, supporting developers using typed JavaScript. The tool is distributed through multiple channels including npm, CDN services, and package managers for Rails and JVM-based frameworks, indicating sustained maintenance across different integration paths.
