js通过iframe下载附件

js通过iframe下载附件

js：

   $('<iframe/>', {        src: url,        width: 0,        height:0    }).appendTo('#download');

后台php：

header('Content-Description: File Transfer');header('Content-Type: application/octet-stream');header('Content-Disposition: attachment; filename=xxx.doc');header('Content-Transfer-Encoding: binary');header('Expires: 0');header('Cache-Control: must-revalidate');header('Pragma: public');header('Content-Length: ' . filesize($filepath));ob_clean();flush();readfile($filepath);<span style="white-space:pre"></span>