检查HTML5拖放文件类型 [英] Checking HTML5 drag and drop file type
问题描述
我想将放置区背景颜色更改为绿色或红色,具体取决于包含的有效载荷是否包含支持的文件类型(JPEG)。
I'd like to change drop zone background color to green or red depending on whether the contained drag over payload contains supported file types (JPEG).
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Gecko和Webkit是否支持确定拖放文件的文件类型?
Do Gecko and Webkit support determining the file type of drag and drop files?
如何在两个浏览器中提取文件类型?
How one can extract the file type in these two browsers?
我发现event.dataTransfer.types API,但是对于Firefox,它似乎是用 application / x-moz-file 填充,因此我认为我做错了。
I have found event.dataTransfer.types API, but for Firefox it seems to be populated with application/x-moz-file and thus I think I am doing something wrong.
推荐答案
您可以使用文件对象在Gecko和webkit支持的浏览器中获取文件类型。
You can get the file types in Gecko and webkit supported browsers using file object.
var files =e.dataTransfer.files||e.target.files; // File list
文件对象返回名称,类型和大小。你可以得到最后修改的日期。
The file object returns Name,Type and size. you can get last modified date too.
var mimeType= files[0].type; //mime type of file list first entry
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