.each 에서 빠져나오는 방법

return false를 추가하면, 빠져나옴

          	  function box() {
                context.lineWidth = 1
                context.strokeStyle = 'rgba(255,0,0,1)';
                $.each(boxes, function(i, box) {
                    x = box[1]
                    y = canvas.height-box[4]
                    width = box[3] - x
                    height = canvas.height-box[2] - y
                    context.strokeRect(x,y,width,height)
                    context.stroke()
                    return false
                })