rxjs-scrolljack

Reactive utilities for rolling your own scrolling.

Usage

import Rx from 'rxjs';
import Scrolljack, {Touch} from 'rxjs-scrolljack';

Scrolljack.scrollWindow(window, Touch)
  .switchMap(move => move.momentum(/* {stiffness: 170, damping: 26} */))
  .subscribe(value => {
    const maxX = document.body.scrollWidth - window.innerWidth;
    const maxY = document.body.scrollHeight - window.innerHeight;
    const newX = window.scrollX + value.deltaX
    const newY = window.scrollY + value.deltaY
    window.scrollTo(
      Math.max(0, Math.min(maxX, newX)),
      Math.max(0, Math.min(maxY, newY)),
    );
  });