Summary

  • The alert function shows a modal window with a text message and waits for the user to press “OK”. The word “modal” means that the visitor cannot interact with the rest of the page until they have dealt with the window.

  • The prompt function shows a modal window with a text message asking the user to input text. It returns the text or, if Cancel button or Esc is clicked, null (in IE instead of null the returned value is undefined).

  • The confirm function shows a modal window with a message and waits for the user to press OK or Cancel. It returns true for OK and false for Cancel/Esc.

Tasks

  • A simple page

    name = prompt("name: ", "")
alert(name)

References