实例

<table>
	<tr>
	    <th>属性</th>
	    <th>属性值</th>
	    <th>描述</th>  
	</tr >
	<tr >
	    <td rowspan="9">type</td>
	    <td>text</td>
	    <td>单行文本输入框</td>
	</tr>
	<tr>
	    <td>password</td>
	    <td>密码输入框</td>
	</tr>
	<tr>
	    <td>radio</td>
	    <td>单选按钮</td>
	</tr>
	<tr>
	    <td>CheckBox</td>
	    <td>复选按钮</td>
	</tr>
	<tr><td>button</td>
	    <td>普通按钮</td>
	</tr>
	<tr>
	    <td>submit</td>
	    <td>提交按钮</td>
	</tr>
	<tr>
	    <td>reset</td>
	    <td>重置按钮</td>
	</tr>
	<tr>
	    <td>image</td>
	    <td>图像形式的提交按钮</td>
	</tr>
	<tr>
	    <td >file</td>
	    <td>文件域</td>
	</tr>
	<tr>
	    <td >name</td>
	    <td>用户自定义</td>
	    <td>控件名称</td>
	</tr>
	<tr>
	    <td >value</td>
	    <td >用户自定义</td>
	    <td >默认文本值</td>
	</tr>
	<tr>
	    <td >size</td>
	    <td >正整数</td>
	    <td >控件在页面中的显示宽度</td>
	</tr>
	<tr>
	    <td >checked</td>
	    <td >checked</td>
	    <td >定义选择控件默认被选中项</td>
	</tr>
	<tr>
	    <td >maxlength</td>
	    <td >正整数</td>
	    <td >控件允许输入的最多字符</td>
	</tr>
</table>