<!DOCTYPE html>
<html>
<body>
<form action="">
User name:<br>
<input type="text" name="userid">
<br>
User password:<br>
<input type="password" name="psw">
</form>
<p>密码字段中的字符被掩码（显示为星号或圆点）。</p>
</body>
</html>