res.attachment()

Sets the "Content-Disposition" header of the current response to "attachment". If a filename is given, then the "Content-Type" will be automatically set based on the extension of the file (e.g. .jpg or .html), and the "Content-Disposition" header will be set to "filename=filename".

Usage

res.attachment([filename]);

Example

res.attachment();
// -> response header will contain:
//   Content-Disposition: attachment

res.attachment('path/to/logo.png');
// -> response header will contain:
//   Content-Disposition: attachment; filename="logo.png"
//   Content-Type: image/png