<input type="file" name="fileName" id="fileID">
<input type="button" value="清空" onclick="clearFile()"/>
<script language="javascript">
function clearFile(){
var obj = document.getElementById("fileID");
obj.outerHTML = obj.outerHTML;
}
</script>
<input type="file" name="fileName" id="fileID">
<input type="button" value="清空" onclick="clearFile()"/>
<script language="javascript">
function clearFile(){
var obj = document.getElementById("fileID");
obj.outerHTML = obj.outerHTML;
}
</script>