how to change the file input's filelist

Question

I have this input of type \"file\", and I want to change its files list. Example:

Answer 1

For security reasons, browsers prevent javascript from changing the files which will be uploaded: only the user can select files via the user interface. This is to prevent an evil script to upload /etc/passwd, for example, without the user knowing.

The one exception is that calling "reset" on the form will clear the file or filelist, but you can never add to programmatically.