dos

Public/static/js/lucky-card.js

@@ -106,22 +106,20 @@
         var mouseY = evt.pageY - coverPos.top - pageScrollTop;
         defineX = mouseX;
         defineX = mouseY;
+        var that = this;
 
         if(!timerStatus)
         {
-            timer = setInterval(fillCircle,1);
+            timer = setInterval(function() {
+                that.ctx.beginPath();
+                that.ctx.fillStyle = '#FFFFFF';
+                that.ctx.globalCompositeOperation = "destination-out";
+                that.ctx.arc(defineX, defineX, 10, 0, 2 * Math.PI);
+                that.ctx.fill();
+            },1);
         }
     };
 
-    function _fillCircle()
-    {
-        this.ctx.beginPath();
-        this.ctx.fillStyle = '#FFFFFF';
-        this.ctx.globalCompositeOperation = "destination-out";
-        this.ctx.arc(defineX, defineX, 10, 0, 2 * Math.PI);
-        this.ctx.fill();
-    }
-
     /**
      * touchend/mouseup event handler
      */