table中border cellPadding cellSpacing区别

table中border cellPadding? cellSpacing区别

border="30">
<tr>
<td>100</td>
<td>200</td>
</tr>
<tr>
<td>300</td>
<td>400</td>
</tr>
</table>
<br />
<input type="button" onclick="padding()" value="改变 Cellpadding">
<input type="button" onclick="spacing()" value="改变 Cellspacing">

</body>
</html>