And of course it goes without saying that this doesn't do anything to verify the of the file type.
dating procura - Validating html file
No way to do that other than validate file extension with Java Script when input path is populated by the file picker. This attribute forces the file dialog to display the required mime type only. He can choose and see all the files in the current directory.
HTML form submission), is used immediately by server-side scripts to parse and display a page of results for and to that user, without properly sanitizing the request.
Because HTML documents have a flat, serial structure that mixes control statements, formatting, and the actual content, any non-validated user-supplied data included in the resulting page without proper HTML encoding, may lead to markup injection.
To implement anything fancier you need to write your own component for whichever browser you want (active X or XUL) There's an "accept" attribute in HTML4.01 but I'm not aware of any browser supporting it - e.g. By doing so, he can select any file with any extension, and submit the form. You cannot restrict the input file to one particular extension by using HTML.