js同比例縮放圖片的小例子_javascript技巧

function DrawImage(ImgD, FitWid, FitHeight) {o = new Image();
    image.src = ImgD.src;
    if (image.width > 0 && image.height > 0) {
 FitWidth / FitHeight) {
            if (image.width > FitWidth) {
                  ImgD.height = (image.height * FitWidth) / image.width;
         {
                ImgD.width = image.width;
             }
        } else {
           . height = FitHeight;
                ImgD.width = (image.width * FitHeight) /               ImgD.width = 圖片.width;
               .高度;
            }
        }
    }
}

    }
}