Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The mozbrowsericonchange event is sent when a new icon (e.g. <link rel="icon"> or <link rel="apple-touch-icon">) is available in the browser <iframe>'s content.

It will be fired once for each icon available.

General info

Specification
Non standard
Interface
CustomEvent
Bubbles
Yes
Cancelable
Yes
Target
<iframe>
Default Action
None

Properties

Property Type Description
target Read only EventTarget The browser iframe
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.
details Read only Object A custom object.

details

The details property returns an anonymous JavaScript object with the following properties:

href
A DOMString representing the path to the new icon.
sizes
A DOMString listing the sizes the new icon is available in, e.g. "16x16" or "16x16 32x32". The any keyword can also be used, to represent "any size."
rel
A DOMString representing the rel  attribute value from the <link> element used to link to the icon.

Example

var browser = document.querySelector("iframe");

browser.addEventListener("mozbrowsericonchange", function( event ) {
  console.log("The URL of the new favicon is:" + event.details.href);
});

See also