How to indicate a form-field error?

1. How do you display error message below input field in HTML?
2. How do I show error messages in HTML?

How do you display error message below input field in HTML?

To customize the appearance and text of these messages, you must use JavaScript; there is no way to do it using just HTML and CSS. HTML5 provides the constraint validation API to check and customize the state of a form element. var email = document. getElementById("mail"); email.

How do I show error messages in HTML?

We can show errors with two methods without using the alert box. Syntax: node. textContent = "Some error message" // To draw attention node.