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close

The close event is executed when a request has been made to close the window when the user presses the close button.

If an event handler is placed on the window element, it can be prevented to close (see example below). Note that the close event is only fired when the user presses the close button on the titlebar; (i.e. not File -> Quit). The unload event should be used to capture all attempts to unload the window.

General info

Specification
XUL
Interface
Event
Bubbles
No
Cancelable
No
Target
window
Default Action
The window is closed.

Properties

Property Type Description
target Read only EventTarget The event target (the topmost target in the DOM tree).
type Read only DOMString The type of event.
bubbles Read only Boolean Whether the event normally bubbles or not.
cancelable Read only Boolean Whether the event is cancellable or not.

Example

window.addEventListener("close", function( event ) {
  // make the close button ineffective
  event.preventDefault();
}, false);

Document Tags and Contributors

Contributors to this page: fscholz, jswisher, Sheppy, ethertank, louisremi
Last updated by: fscholz,