七牛不支持jquery -file-upload插件的跨域上传

Question

https://github.com/blueimp/jQuery-File-Upload/wiki/Cross-domain-uploads
插件跨域上传文档
Cross-site XMLHttpRequest file uploads方式

Note:
For cross-browser compatibility, the header must be set as response to both the file upload (POST) request as well as response to OPTIONS requests. See Preflighted requests for more information.

七牛能否提供
提供OPTIONS的请求方式？

Answer 1

可以跨域上传的，如果是POST方法的话，Ajax会先自动发一个Option请求。