jQuery+html5 canvas仪表盘进度条特效

参数{
    "max": 100, //最大值 
    "step": 1, //步长 
    "angle": 0, //角度0-9 
    "radius": 200, //半径
    "progresslineWidth": 15, //进度条粗细
    "progresslineColor": "#e3e8ee", //进度条背景颜色 
    "scoreSuffix": "", //分值后缀 
    "text": "进度条", //文字 
    "progressColor": function(score) {
        return "#2b85e4"
    },
    //自定义进度条颜色 
    "draw": function(ctx, score) {
        //自定义画图
    }
}