2.2.3 • Public • Published


This fork supports PointerEvent for mouse or other pointer devices. See Usage & API Section below

A 2kb gzipped low-level library to create custom scrollers with touch and keyboard support. This is heavily inspired by Bartek Drozdz VirtualScroll util. See his article for reference.


  • Can create multiple instances with different elements as targets
  • Let you do the actual scrolling logic: use CSS Transforms, WebGL animation or anything you like
  • Native arrow keys support and shift/space support mimicking default browser behaviour

For high-level libraries based off virtual-scroll, check locomotive-scroll or smooth-scrolling.


npm i virtual-scroll-pointer -S

Usage & API


  • new VirtualScroll(options)
    • el: the target element for mobile touch events. Defaults to window.
    • mouseMultiplier: General multiplier for all mousewheel (including Firefox). Default to 1.
    • touchMultiplier: Mutiply the touch action by this modifier to make scroll faster than finger movement. Defaults to 2.
    • firefoxMultiplier: Firefox on Windows needs a boost, since scrolling is very slow. Defaults to 15.
    • keyStep: How many pixels to move with each key press. Defaults to 120.
    • preventTouch: If true, automatically call e.preventDefault on touchMove. Defaults to false.
    • unpreventTouchClass: Elements with this class won't preventDefault on touchMove. For instance, useful for a scrolling text inside a VirtualScroll-controled element. Defaults to vs-touchmove-allowed.
    • passive: if used, will use passive events declaration for the wheel and touch listeners. Can be true or false. Defaults to undefined.
    • useKeyboard: if true, allows to use arrows to navigate, and space to jump from one screen. Defaults to true
    • useTouch: if true, uses touch events to simulate scrolling. Defaults to true
    • usePointer: if true, uses pointer events to simulate scrolling if is not a touch screen device, e.g. desktop with a mouse, Defaults to true
    • pointerClickDelta: when usePointer is true, the minimum scroll delta pervent a click event being fired after pointerup, Defaults 1 * window.devicePixelRatio,


  • instance.on(callback, context) Listen to the scroll event using the specified callback and optional context.

  •, context) Remove the listener.

  • instance.destroy() Remove all events and unbind the DOM listeners.

Events note: Each instance will listen only once to any DOM listener. These listener are enabled/disabled automatically. However, it's a good practice to always call destroy() on your VirtualScroll instance, especially if you are working with a SPA.


When a scroll event happens, all the listeners attached with instance.on(callback, context) will get triggered with the following event:

  x, // total distance scrolled on the x axis
    y, // total distance scrolled on the y axis
    deltaX, // distance scrolled since the last event on the x axis
    deltaY, // distance scrolled since the last event on the y axis
    originalEvent; // the native event triggered by the pointer device or keyboard


import VirtualScroll from "virtual-scroll";

const scroller = new VirtualScroll();
scroller.on((event) => { = `translateY(${event.y}px)`;





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