js同比例缩放图片的小例子
发布时间:2020-12-14 22:51:07 所属栏目:资源 来源:网络整理
导读:复制代码 代码如下: function DrawImage(ImgD,FitWidth,FitHeight) { var image = new Image(); image.src = ImgD.src; if (image.width 0 image.height 0) { if (image.width / image.height = FitWidth / FitHeight) { if (image.width FitWidth) { ImgD.w
复制代码 代码如下: function DrawImage(ImgD,FitWidth,FitHeight) { var image = new Image(); image.src = ImgD.src; if (image.width > 0 && image.height > 0) { if (image.width / image.height >= FitWidth / FitHeight) { if (image.width > FitWidth) { ImgD.width = FitWidth; ImgD.height = (image.height * FitWidth) / image.width; } else { ImgD.width = image.width; ImgD.height = image.height; } } else { if (image.height > FitHeight) { ImgD.height = FitHeight; ImgD.width = (image.width * FitHeight) / image.height; } else { ImgD.width = image.width; ImgD.height = image.height; } } } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |