Prompt

"prompt" shows a modal window with a text message, an input field for the visitor, and the buttons "OK"/"Cancel".

Try this example in JavaScript:

Expected outcomes:

The call to prompt returns the text from the input field or null if the input was canceled.
The visitor can type something in the prompt input field and press "OK". Then we get that text in the age.
Or they can cancel the input by pressing "Cancel" or hitting the "Esc" key, then we get null as the age.

Try it in your code editor!

Bonus Lesson: User Interactions