How to make this canvas automatic ?

How to make this canvas automatic ?

Hi everybody,

I wondered how to make this canvas working automatically, with an onload.
But I don't know how to make it.

here are my codes

  1. My html codes

  2. <div style="display:inline;width:200px;height:200px;"> <canvas height="200px" width="200"></canvas> <input type="number" class="knob" value="1" max="30" min="1" data-fgcolor="#66EE66" data-angleoffset="180" data-width="150" style="width: 104px; height: 66px; position: absolute; vertical-align: middle; margin-top: 66px; margin-left: -152px; border: 0px none; background: none repeat scroll 0% 0% transparent; font: bold 40px Arial; text-align: center; color: rgb(102, 238, 102); padding: 0px;"> </div>
     


And here my jquery file :
http://www.monserrurierparis.com/js/knob.js

Thank you for your help guys !