代码错误 cxt.fillStyle那一行Cannot set property 'fillStyle' of undefined
function renderDight (x,y,num,cxt) {
cxt.fillStyle = "#005588";
for(var i = 0;i<digit[num].length;i++){
for(var j=0;j<digit[num][i].length;j++){
if(digit[num][i][j] == 1){
cxt.beginPath();
//第(i,j)个圆的圆心位置：
//CenterX:x + j*2*(R+1)+(R+1)
//CenterY:y + i*2*(R+1)+(R+1)
cxt.arc(x+j*2*(RADIUS+1)+(RADIUS+1),y+i*2*(RADIUS+1)+(RADIUS+1),RADIUS,0,2*Math.PI);
cxt.closePath();
cxt.fill();
}
}
}
}
