实例：
<html>
<head>
<title>表单实例</title>
</head>
<body>
<center>
<h1><font color="blue">表单</font></h1>
<hr width="80%" color="green"/>
<form action="index.html" method="GET">
<table border="1" width="500px" cellpadding="5" cellspacing="0" align="center">
<tr>
<th colspan="2">学员注册表</th>
</tr>
<!--readonly="readonly" disabled="disabled" -->
<tr>
<td>姓名：</td><td><input type="text" nam="username" size="19" value="" maxlength="6" /></td>
</tr>
<tr>
<td>密码</td><td><input type="password" name="password"/></td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="radio" name="sex" value="男" checked="checked" />男
<input type="radio" name="sex" value="女"/>女
</td>
</tr>
<tr>
<td>爱好</td>
<td>
<input type="checkbox" name="loves" value="篮球" checked="checked"/>篮球
<input type="checkbox" name="loves" value="游戏"/>游戏
<input type="checkbox" name="loves" value="学习"/>学习
<input type="checkbox" name="loves" value="唱歌"/>唱歌
</td>
</tr>
<tr>
<td>sql操作</td>
<td>
<select name="clazz">
<option value="add">add</option>
<option value="sel">sel</option>
<option value="upd">upd</option>
<option value="del">del</option>
</select>
</td>
</tr>
<tr>
<td>照片：</td>
<td>
<input type="file" name="photo" size="40"/>
</td>
</tr>
<tr>
<td>备注</td>
<td>
<textarea rows="6" cols="40">
</textarea>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="提交"/>
<input type="reset" value="重填"/>
<input type="button" value="按钮" onclick="alert('hello world')"/>
<input type="image" src="11.gif" alt="提交表单"/>
<input type="hidden" name="hidden" value="learn" />
</td>
</tr>
</table>
</form>
</center>
</body>
</html>
结果：
