RotateUI

原生改编jquery-gman-circle.js

演示地址

new RotateUI({
    el:DOM,
    width:300,
    height:300,
    value:-Math.PI/2,
    slide:function(e,u){
        console.log(u);
    }
});

or

var ui=new RotateUI({
  slide:function(e,u){
  }
});
document.appendChild(ui.dom);