这是一个奇怪的问题。
我有一个扫描仪可以返回base64字符串中的扫描图像。但是，当我使用该字符串设置img标签的src属性时，它只能在IE中使用。
例如，我的HTML标记最终看起来像这样：
<img id="img_buf" src"data:image/gif;base64,SUkqAAgAAAARAP4ABAABAA...." />
问题是这个字符串只适用于IE。我之前看到过base64字符串在IE中不起作用的问题，但我没有遇到相反的情况。有没有办法使用javascript将字符串转换为可以跨浏览器工作的base64字符串？
更新
好的，为了更清楚，这里是完整的HTML：
<!DOCTYPE html>
<html>
<head>
<title>IMG Data Sample</title>
<script type="text/javascript">
function LoadImg()
{
var imgStr1 = "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";
var imgStr2 = "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";
document.getElementById("img_buf1").src = "data:image/tiff;base64," + imgStr1;
document.getElementById("img_buf2").src = "data:image/tiff;base64," + imgStr2;
}
</script>
</head>
<body onload="LoadImg()">
<img id="img_buf1" alt="Cannot Display Image..." />
<br />
<br />
<img id="img_buf2" alt="Cannot Display Image..." />
</body>
</html>
试一试。将上面的代码复制到记事本中，将其保存为桌面上的test.html，然后使用不同的浏览器打开它。在IE中，两个img标签都显示图像。但是，在Firefox的Firefox中，只有底部的img标签显示图像，而顶部的img标签显示替代文字。
通过将imgStr1的值传递给我写的C＃程序，我得到了imgStr2的值：
// imgStr1 in the HTML
string orgString = "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";
byte[] orgByte = Convert.FromBase64String(orgString);
MemoryStream byteMs = new MemoryStream(orgByte, 0, orgByte.Length);
byteMs.Write(orgByte, 0, orgByte.Length);
Image img = Image.FromStream(byteMs, true);
MemoryStream b64Ms = new MemoryStream();
img.Save(b64Ms, ImageFormat.Png);
byte[] newByte = b64Ms.ToArray();
string newString = Convert.ToBase64String(newByte);
// I'm copying the output from the text box and setting the value of imgStr2 with it
textBox1.Text = newString;
您可以看到C＃代码基本上只是更改图像格式并将其转换回Base64字符串。如果push推进，我可以将值发送回我的C＃服务器端代码并返回重新格式化的Base64字符串。但是，如果可能的话，我想通过在客户端使用Javascript执行C＃代码来避免额外的服务器调用。
我的问题：是否可以使用Javascript执行此操作？