jquery Dial Draw function Realization _jquery

One, the use of material

Second, the code is as follows, the focus is JS part

<! DOCTYPE html>  

The effect is as follows:

III. Matters of note
Mask began as follows, using RGBA, but IE8 incompatible, using PNG image Background:url (images/mask.png) no-repeat;

. mask {
 width:100%;
 height:100%;
 Position:absolute;
 left:0;
 top:0;
 Background-color:rgba (252,211,4,0.5);
 Display:none
}

I hope that you can be compiled from this article has been harvested, for everyone to achieve the lottery function to help.