[imps] Question about body.onload

[Anne van Kesteren]

On Tue, 16 Feb 2010 15:25:29 +0100, xuzheng_yahoo <xz911jp at yahoo.co.jp>  
wrote:
> I have question about when should user agent fire the body.onload event.
> Would you like give me some answer or hint?
>
> 1. When should body.onload event fired.
> I have investigated in HTML5 and find following description in "4.8.7  
> The video element".
> "The user agent finishes fetching the entire media resource"
> Is this the definition of body.onload?

No.

The load event is dispatched after parsing, when nothing in the document  
"delays the load event". See:

http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#the-end


> Based on the above definition, I think that body.onload should be fired
> when whole data be complete fetched from network.
> (For example, should be fired before fetched image data is
> complete decoded.)
> Am I correct?

It may be fired before, but dimensions have to be known.


> 2. If body.onload is defined as above, why "delay the load event" is  
> defined again?

You were not looking at the body load event.


> 3. What element may "delay the load event"?
>    What (type of) elements may (should) "delay the load event" supposed  
> by HTML5?

If you click on the definition in

http://www.whatwg.org/specs/web-apps/current-work/#delay-the-load-event

it should give you a list with everything that references it.


-- 
Anne van Kesteren
http://annevankesteren.nl/