HTML Forms are used to collect user input data such as text, selections, and file uploads on a webpage. The form data is typically sent to a server-side script for processing or to another webpage for display.
HTML Forms are created using the <form> element, which can have several attributes such as action (where the form data is sent), method (HTTP request method), enctype (data encoding type), and target (where the form response is displayed).
Within the <form> element, different types of form controls can be used, such as text inputs (<input type="text">), checkboxes (<input type="checkbox">), radio buttons (<input type="radio">), dropdown menus (<select>), and buttons (<button>).
Each form control has a name attribute which is used to identify it when the form is submitted. The value of the form control is sent along with its name when the form is submitted.
HTML Forms can also include hidden fields (<input type="hidden">) that contain data that is not displayed to the user but is submitted along with the rest of the form data.
Form validation can be done using client-side scripting (such as JavaScript) or server-side scripting (such as PHP). Client-side validation is done using the required attribute or custom validation using JavaScript. Server-side validation is done using a script that processes the form data and returns error messages if necessary.
HTML Forms are an important part of web development, as they allow websites to collect and process user input data in a structured and secure manner.