webuploader限制上传文件类型

uploader = webuploader.create({
                accept: {
                        extensions: "pdf,doc,ppt,pptx,xls,xlsx,docx,rar,zip,7z,tar.gz,war,jar,txt,chm,pdr,azw,prc,mbp,tan,tpz,epub,mobi,rp",
                        mimeTypes: ".pdf,.doc,.ppt,.pptx,.xls,.xlsx,.docx,.rar,.zip,.7z,.tar.gz,.war,.jar,.txt,.chm,.pdr,.azw,.prc,.mbp,.tan,.tpz,.epub,.mobi,.rp"
                    }
                });