fscrub

universal scrub experience with touch / mouse across browsers

Why?

Different browsers have different support on touch experience, egde, chrome, safari have their own implementation of touch support and the events stack may not be expected on touchable devices. Especially sometimes we only want to do a simple scrub. Why can't the scrub action be easy as the click with mouse on desktop?

Let's see the observation on behavior of desktop devices + mouse and touchable devices + touch:

Browser & Action	PointerEvent	MouseEvent	TouchEvent
chrome + touch	✅	✅	✅
edge + touch	✅	✅	❌
safari + touch	❌	❌	✅
chrome + mouse	✅	✅	❌
edge + mouse	✅	✅	❌
safari + mouse	❌	✅	❌

Emmmmm......

Since chrome and edge both support PointerEvent, safari and chrome both support TouchEvent, edge on touch devices will fire mouse event but other dont', we cannot use any single event as we want. If we don't have PointerEvent polyfill on safari, it will ba hard to listen to scrub actions.

fscrub is used to resolve the diffculties and let you write less code.

Usage

<div class="scrub__baseline">
  <div class="scrub__head" />
</div>

import fscrub from 'fscrub'

fscrub(
  document.querySelector('.scrub__head'),
  {
    onStart() { ... },
    onMove() { ... },
    onEnd() { ... },
  },
  {
    mouse: false,
    touch: true,
    hover: true,
  }
)

fsrcub

fscrub(
  node: Node,
  {
    onStart: function(MouseEvent | PointerEvent | TouchEvent) {},
    onMove: function(MouseEvent | PointerEvent | TouchEvent) {},
    onEnd: function(MouseEvent | PointerEvent | TouchEvent) {},
  },
  { mouse: boolean, touch: boolean, hover: boolean }
)

Arguments

• node is the scrubble dom node you want to track the scrub moves.
• handles is an object. which may carry onStart, onMove and onEnd for different scrub phases.
• option is an object. option.mouse will enable triggering scrub events when playing with mouse, option.touch is for finger touch. if you specify option.hover to true, it will turn option.mouse to false. since the behavior have conflicts

Returns

A release function to let you unlisten the scrub actions of the node.

do what you need to do in the handlers onStart, onMove and onEnd to render changes of UI.