375236 - No Data will be sent if javascript sets the file-input to NULL

Status: RESOLVED WORKSFORME

(Core :: DOM: Core & HTML, defect)

Description

[Jakob Jarosch]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3

When you have an Form like this one:

<form action="upload.php" name="uploadform">
<input type="file" name="upload" />
<input type="submit" value="upload" />
</form>

And you select a file and javascript sets the file-value to ZERO, like this:

javascript:document.uploadform.upload.value='';

And you select a file the second time, and press submit, nothing will be uploaded, only the postvars will be submited...

This is a great problem if you try to upload via iframes more than 1 file with only 1 form...

Reproducible: Always

Steps to Reproduce:
1.
2.
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Comment 1

[Jakob Jarosch]

sorry, the example should be:

<form action="upload.php" name="uploadform" method="post" enctype="multipart/form-data">
  <input type="file" name="upload" />
  <input type="submit" value="upload" />
</form>

Comment 2

[Samuel Sidler (old account; do not CC)]

Jakob, you resolved this WORKSFORME. I'm assuming you're not seeing the issue anymore?

Comment 3

[Jakob Jarosch]

I'm quite sure there was an issue somewhere and I really tried to solve it for a long time but as nothing worked, I decided to skip that part of the project. Unfortunately I'm no longer able to reproduce this bug anymore with the steps I submitted.