代码如下
<TR class="tdbg" >
<TD width="14%"><strong style="font-weight: 400"><span style="font-size: 9pt">电话：</span></strong></TD>
<TD width="82%"> <span style="font-size: 9pt">1</span>:<INPUT maxLength=50 size=28 name=tel1><font color="#FF0000"><br>
</font><span style="font-size: 9pt">2</span>:<INPUT type=text maxLength=20 size=28 name="tel2"><br>
<span style="font-size: 9pt">3</span>:<INPUT type=text maxLength=20 size=28 name="tel3"></TD>
</TR>
请问高手怎么改才能输入的既是数字，又是文字？
