file控件如何reset
<body><FORM name="form1">
方法1:<input type="file" name="f"><input type=button value=reset onclick="f.outerHTML='<input type='file' name='f'>'">
</FORM>
<FORM name=form2>
方法2:<input type="file" name=f2>
<input type=button value=reset onclick="f2.select();document.execCommand('delete')">
</FORM>
</body>
补充：asp教程,客户端相关打印
