问题:

basically i have this form that allows user to upload to my server:

<form id = "uploadbanner" method = "post" action = "#">
      <input id = "fileupload" type = "file" />
      <input type = "submit" value = "submit" id = "submit" />
</form>

But the problem is that when i upload a file, then click submit, i don't see the file upload in the server directory.

回答1:

<form id="uploadbanner" enctype="multipart/form-data" method="post" action="#">
   <input id="fileupload" name="myfile" type="file" />
   <input type="submit" value="submit" id="submit" />
</form>

To upload a file, it is essential to set enctype="multipart/form-data" on your form

You need that form type and then some php to process the file :)

You should probably check out Uploadify if you want something very customisable out of the box.

回答2:

You need enctype="multipart/form-data" otherwise you will load only the file name and not the data.

回答3:

On top of what the others have already stated, some sort of server-side scripting is necessary in order for the server to read and save the file.

Using PHP might be a good choice, but you're free to use any server-side scripting language. http://www.w3schools.com/php/php_file_upload.asp may be of use on that end.