Forms and validation

Forms allow users to send data to a server through a web site, e.g. sign up for a news letter, register an appointment at the doctors office or signing up for an account. The data doesn't have to be sent to the server, it can also be used by the web site on the client, as we will do in this course.

The form consist of one or more input fields (text fields, dropdown menus, checkboxes or radio buttons) called widgets. These are often paired with a label. At the end of the form you usually find a submit button, making it possible for the user to submit the provided data.