<lable>和<inpud>这两个标签有何作用?
<form method="post" action="save.php">
<label for="username">用户名:</label>
<input type="text" name="username" />
<label for="pass">密码:</label>
<input type="password" name="pass" />
</form>
这段代码又是有何居心？
