如何在HTML中指定该元素为只读？
要将元素设置为只读，请使用readonly属性。您可以尝试运行以下代码以实现readonly属性-
示例
<!DOCTYPE html>
<html>
<body>
<h2>Login</h2>
<form action = "/new.php">
<input type = "text" value = "Amit" name = "sname" readonly/><br>
<input type = "password" name = "password"> <br><br>
<input type = "submit" value = "Submit">
</form>
</body>
</html>