Does input type="file" exist in the submitted form scope if left blank?

Hi WolfShade,

The following point is perhaps just a bit of craziness, but I shall put it out there. The file-upload form, together with content-type, is:

<form enctype="multipart/form-data">

<input type="file" name="foo" />

</form>

That is, the content-type is binary. Which gets me thinking that, when you submit the form without selecting a file, the form field exists, and has value null (clients then interpret the null as "").

This just might be relevant to a server whose validation code or response-header expects binary input. 

Thank you, BeRadB and John.  I kind of suspected, but wasn't sure, and a Google search didn't help.

V/r,

^ _ ^ 

I believe the form field will be there but the value will be empty.