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mozbrowserloadstart

Non-standard
This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.

The mozbrowserloadstart event is fired when the browser <iframe> starts to load a new page.

This can be used when the embedder wants to start spinning a loading indicator, or update the UI in some other way to indicate loading has started.

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 Does the event normally bubble?
cancelable Read only boolean Is it possible to cancel the event?

Example

In this example the mozbrowserloadend and mozbrowserloadstart events are used to change the icon shown on the stop/reload button between stop (x) and reload (R), as appropriate.

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

browser.addEventListener('mozbrowserloadstart',function() {
  stopReload.textContent = 'x';
});

browser.addEventListener('mozbrowserloadend',function() {
  stopReload.textContent = 'R';
});

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, teoli, kscarfone, Jeremie
 Last updated by: chrisdavidmills,