Layout.fire onload after image background loads
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Background
When a document finishes loading, an onload
event is fired. Normally this event is fired before background images finish loading, decreasing the perceived rendering time. However, there are a variety of reasons why someone would need the event fired after background images load (notification when rendering is complete, for one). This preference controlled whether background images load completely before the onload
event fires.
This was previously controlled by an environment variable (MOZ_FORCE_PAINT_AFTER_ONLOAD
).
Possible values and their effects
True
After a document and all its background images finish loading, fire the onload
event.
False
Allow the onload
event to fire before background images finish loading. (Default)
Caveats
- This preference was removed, making the default behavior for
onload
to fire after background images have loaded. This was done for compatibility with other major browsers.
First checked in
2005-07-15 by Christian Biesinger
Has an effect in
- Mozilla Firefox (1.5–2.0)
- Mozilla Thunderbird (1.5–2.0)
- Camino (1.0–1.5)
- SeaMonkey (1.0–1.1)