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<label>标签for属性的妙用

2014-03-26 12:50 369 查看
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

[html] view plaincopy

<!--

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 plaincopy

<!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>
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