HTML5

6.4 User prompts

6.4.1 Simple dialogs

window . alert(message)

Displays a modal alert with the given message, and waits for the user to dismiss it.

A call to the navigator.yieldForStorageUpdates() method is implied when this method is invoked.

result = window . confirm(message)

Displays a modal OK/Cancel prompt with the given message, waits for the user to dismiss it, and returns true if the user clicks OK and false if the user clicks Cancel.

A call to the navigator.yieldForStorageUpdates() method is implied when this method is invoked.

result = window . prompt(message [, default] )

Displays a modal text field prompt with the given message, waits for the user to dismiss it, and returns the value that the user entered. If the user cancels the prompt, then returns null instead. If the second argument is present, then the given value is used as a default.

A call to the navigator.yieldForStorageUpdates() method is implied when this method is invoked.

6.4.2 Printing

window . print()

Prompts the user to print the page.

A call to the navigator.yieldForStorageUpdates() method is implied when this method is invoked.

6.4.3 Dialogs implemented using separate documents

result = window . showModalDialog(url [, argument] )

Prompts the user with the given page, waits for that page to close, and returns the return value.

A call to the navigator.yieldForStorageUpdates() method is implied when this method is invoked.

[NoInterfaceObject] interface WindowModal {
  readonly attribute any dialogArguments;
           attribute DOMString returnValue;
};

window . dialogArguments

Returns the argument argument that was passed to the showModalDialog() method.

window . returnValue [ = value ]

Returns the current return value for the window.

Can be set, to change the value that will be returned by the showModalDialog() method.

The window.close() method can be used to close the browsing context.