我最近问了另一个(相关)问题，这引出了这个后续问题:
Reading through the jQuery.ajax() documentation (http://api.jquery.com/jQuery.ajax/), it seems the list of accepted dataTypes doesn't include images.
I'm trying to retrieve an image using jQuery.get (or jQuery.ajax if I have to), store this image in a Blob and upload it to another server in a POST request. Currently, it looks like due to the mismatch in datatypes, my images end up being corrupt (size in bytes mismatch, etc.).
The code to perform this is as follows (it is in coffeescript but shouldn't be difficult to parse):
handler = (data,status) ->
fd = new FormData
fd.append("file", new Blob([data], { "type" : "image/png" }))
jQuery.ajax {
url: target_url,
data: fd,
processData: false,
contentType: "multipart/form-data",
type: "POST",
complete: (xhr,status) ->
console.log xhr.status
console.log xhr.statusCode
console.log xhr.responseText
}
jQuery.get(image_source_url, null, handler)
我如何取而代之地将此图像检索为一个blob？