通过Javascript检测图像的mime类型 [英] Detect mime type of an image via Javascript

问题描述

我正在使用javascript document.images功能在我的网页上检测图像，这会返回一连串的图像。有没有办法从这个获取图像的mime类型，因为我没有在正在加载的图像上使用任何扩展名？

i am detecting images on my webpage with javascript document.images function which returns an rray of images. Is there any way to get the mime type of the image from this since i am not using any extension names on images which are loading?

推荐答案

我不认为这是可能的，除了在jQuery中再次请求图像并尝试对数据使用MIME类型检查。 （您可能能够发送HEAD请求并获取返回的任何内容类型）

I don't think this is possible, apart from requesting the image again in jQuery and trying to use a MIME type check on the data. (You might be able to send a HEAD request and get whatever Content-type was returned)

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