摘要:本文实例讲述了javascript实现获取图片大小及图片等比缩放的方法。分享给大家供大家参考,具体如下:获取图片大小:var originImage = new Image(); function GetImageWidth(oImage) { if (originImage.src !=&nb
本文实例讲述了javascript实现获取图片大小及图片等比缩放的方法。分享给大家供大家参考,具体如下:
获取图片大小:
var originImage = new Image();
function GetImageWidth(oImage) {
if (originImage.src != oImage.src) originImage.src = oImage.src;
return originImage.width;
}
function GetImageHeight(oImage) {
if (originImage.src != oImage.src) originImage.src = oImage.src;
return originImage.height;
}图片等比缩放:
function SetImage(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;
}
}
}
}更多关于javascript实现获取图片大小及图片等比缩放的方法请关注PHP中文网(www.php.cn)其他文章!