knob.js

About

knob.js is a simple to use, no-library knob widget for html5 browsers.

Live Demo

Source:

<x-knobjs-knob id="knob"></x-knobjs-knob>
<input id="input" style="vertical-align:top;">
<script>
  window.onload = function(){
    var knob = document.getElementById("knob");
    var input = document.getElementById("input");
    knob.onchange = function(){
      input.value = ~~knob.value;
    }
    input.onchange = function(){
      knob.value = ~~input.value;
    }
  }
</script>

How to get it

npm:

npm install knobjs

bower:

bower install knobjs

More documentation

on GitHub