Read: 13 Update Delete notes taken from MDN web docs "Sending Form Data" - cindyweiss/seattle-301d55 GitHub Wiki

The "form" element defines how the data will be sent. All of its attributes are designed to let you configure the request to be sent when a user hits a submit button. The two most important attributes are action and method.

The action attribute defines where the data gets sent. Its value must be a valid relative or absolute URL. If this attribute isn't provided, the data will be sent to the URL of the page containing the form — the current page

The method attribute defines how data is sent. The HTTP protocol provides several ways to perform a request; HTML form data can be transmitted via a number of different methods, the most common being the GET method and the POST method

Security issues Each time you send data to a server, you need to consider security. HTML forms are by far the most common server attack vectors (places where attacks can occur). The problems never come from the HTML forms themselves — they come from how the server handles data.