<script>

function clearWithReset()

{

    document.getElementById("form").reset();

}

function clearBySettingValue()

{

    document.getElementById("file").value = "";

}

function clearBySettingValueToNull()

{

    document.getElementById("file").value = null;

}

function clearBySettingValueToX()

{

    document.getElementById("file").value = "x";

}

</script>

<p>Use this to test the various ways you can clear an input type=file element.</p>

<form id="form">

<p>Choose a file here: <input type="file" id="file"></input></p>

<p>Then press one of these buttons, that should clear the file:

<input type="button" value="clear with reset()" onclick="clearWithReset()">

<input type="button" value="clear by setting value to ''" onclick="clearBySettingValue()"></p>

<p>Or press this button that should clear the file, but won't, due to <a href="http://bugs.webkit.org/show_bug.cgi?id=13448">bug 13448</a>: <input type="button" value="clear by setting value to null" onclick="clearBySettingValueToNull()"></p>

<p>Or press this button to verify we can't set to a non-empty value: <input type="button" value="clear by setting value to 'x'" onclick="clearBySettingValueToX()"></p>

</form>