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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 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 |
Whether the event normally bubbles or not |
cancelable Read only |
Boolean |
Whether the event is cancellable or not? |
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';
});
Related Events
mozbrowserasyncscrollmozbrowserclosemozbrowsercontextmenumozbrowsererrormozbrowsericonchangemozbrowserloadendmozbrowserlocationchangemozbrowseropenwindowmozbrowsersecuritychangemozbrowsershowmodalpromptmozbrowsertitlechangemozbrowserusernameandpasswordrequired