从 XMLHttpRequest 到 Blob 的图像数据

Question

I am making an XMLHttpRequest :

request = new XMLHttpRequest();
request.open('GET', modifiedImageUrl, true);
request.onreadystatechange = ->
    if request.readyState == 4
        if request.status == 200
            blob = new Blob([request.response], { type: 'image/jpeg' })
request.send(null);

(Please excuse my coffeescript). I would like to create a Blob from the retrieved image, but am not getting any data in my blob besides the size and type:

Blob
    size: 88804
    type: "image/jpeg"
    > __proto__: Object

Looking at request.response :

What is this format? How can I go about converting this to a Blob that has more information than just the size?

Answer 1

The blob has the data in it, you just can't view it like that.
Also if you didn't set your response type to arraybuffer(or blob) you image data is going to get corrupted.