HTML form validation can be done by JavaScript. If a form field (fname) is empty, this function alerts a message, and returns false, to prevent the form from being submitted:

Summary: in this tutorial, you will learn about JavaScript form API: accessing the form, getting values of the elements, validating form data, and submitting the form. To create a form in …

Apr 11, 2025 · When a user submits an HTML form, for example by clicking the submit button, the browser makes an HTTP request to send the data in the form. But instead of this declarative …

Apr 11, 2025 · The first article in our series provides you with your very first experience of creating a web form, including designing a simple form, implementing it using the right HTML form …

Jan 9, 2025 · In this article, we will guide you through creating a form validation application. This application will validate essential fields such as firstName, lastName, userName, email, and …

Mar 10, 2025 · Forms and control elements, such as <input> have a lot of special properties and events. Working with forms will be much more convenient when we learn them. Document …

In this tutorial, you’re going to focus on the client-side validation only. When it comes to client-side validation, you’ll have two options: JavaScript validation: you develop the validation logic using …

Apr 11, 2025 · Web forms are a very powerful tool for interacting with users — most commonly they are used for collecting data from users, or allowing them to control a user interface. …

Mar 17, 2025 · In this tutorial, we will learn, discuss, and understand the JavaScript form. We will also see the implementation of the JavaScript form for different purposes.

Jan 20, 2023 · To submit a form using JavaScript, you must first create the form and add distinctive, specific attributes to the input fields. You will use these attributes to retrieve the …