The code above will write “Hello World!” to a blank web page and display it for the user. You may be thinking, why not just do that in a paragraph tag? Well, we could have the statement appear only when an incorrect password was entered into a form or as a response when Hello was entered into a form. We’ll get into that later. For now, work on grasping the concept of a function. Can you think of any reason why forms in HTML can be named with a unique ID?