vanilla-js lightweight custom HTML scrollbar
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yairEO corrected dragging calculations there needed some fine-tuning to bett…
…er working when the drag event position was outside the bounds of the track
Latest commit 4efb8fc Jul 5, 2018


Very lightweight & robust custom-looking HTML scrollbar script.

  • 1.4KB gzipped (js)
  • 4.0KB minified (js)
  • 7.7KB unminified (js)
  • ~20 KB avarage similar scripts (unminified)

Currently only supports vertical scroll due to cultural norms

While there is somewhat of a support for scrollbar customization through CSS, it is not fully supported in all browsers / older versions and the level of customization isn't flexible enough to allow creativity or certain special product needs.

Example markup:

<div class="foo">



The above will transform into this:

<div class="foo">
    <div class="fakeScroll__wrap">
        <div class="fakeScroll__content">
    <div class="fakeScroll__bar"></div>

Browser support

The script probably won't work on IE without Babel & ES2015 polyfills.



Name Type Default Info
classname String "" Class name which is added to the scrollbar Track element
track Boolean/String false enable track events. use "smooth" for smooth "jumping"