JavaScript实现网页图片等比例缩放实现代码及调用方式_javascript技巧

// 说明：用 JavaScript 实现网页图片等比例缩放
// 整理：http://www.CodeBit.cn
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;
}
}
}
}
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