<label>标签for属性的妙用

在用户注册的时候，常常用户点击文字就需要将光标聚焦到对应的表单上面，这个是怎么实现的呢？就是下面我要介绍的<label>标签的for属性

定义：for 属性规定 label 与哪个表单元素绑定

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<!--
显式的联系：
<label for="SSN">Social Security Number:</label>
<input type="text" name="SocSecNum" id="SSn" />
隐式的联系：
<label>Date of Birth: <input type="text" name="DofB" /></label>
-->

下面是例子：

[html] view plain copy

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<table>
<tr>
<td><label for="username">用户名：</label></td>
<td><input type="text" name="username" id="username"></td>
</tr>
<tr>
<td><label for="password">密码：</label></td>
<td><input type="password" name="password" id="password"></td>
</tr>
<tr>
<td><label for="repassword">密码确认：</label></td>
<td><input type="password" name="repassword" id="repassword"></td>
</tr>
<tr>
<td><label for="_basketball">爱好：</label></td>
<td>
<label><input type="checkbox" value="basketball" name="hobby" id="_basketball">basketball</label>
<label><input type="checkbox" value="football" name="hobby" id="_football">football</label>
<label><input type="checkbox" value="skating" name="hobby" id="_skating">skating</label>
<label><input type="checkbox" value="dance" name="hobby" id="_dance">dance</label>
</td>
</tr>
<tr>
<td><label for="_boy">性别：</label></td>
<td>
<label><input type="radio" value="boy" name="sex" id="_boy">boy</label>
<label><input type="radio" value="girl" name="sex">girl</label>
</td>
</tr>
<tr>
<td><label for="email">邮箱：<label></td>
<td><input type="text" name="email" id="email"></td>
</tr>
<tr>
<td><label for="address">住址：</label></td>
<td><input type="text" name="address" id="address"></td>
</tr>
</table>
</body>
</html>