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Res Attachment

_includes/api/en/5x/res-attachment.md

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<h3 id='res.attachment'>res.attachment([filename])</h3>

Sets the HTTP response Content-Disposition header field to "attachment". If a filename is given, then it sets the Content-Type based on the extension name via res.type(), and sets the Content-Disposition "filename=" parameter.

js
res.attachment()
// Content-Disposition: attachment

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