Re: bug in example

On Wed, 4 Nov 2009, Bennet Yee (ä½~Yä»~Uæ~V~L) wrote:
> 
> my apologies in advance if this has already been noted.  i recently was 
> introduced to http://dev.w3.org/2006/webapi/FileAPI/ and noticed that 
> the first example appears to have the following race condition: in 
> getAsText, reader.readAsText occurs before any event callbacks are set, 
> so if the completion occurs after read.readAsText(...) and 
> reader.onprogress = ..., .onload = ... etc, then no callbacks will ever 
> get called.  or am i misunderstanding the way the callbacks are supposed 
> to work -- i.e., they're level triggered and not edge triggered?  (i'd 
> imagine onprogress shouldn't be level triggered.)

Events are asynchronous, so they never trigger before the script has 
finished (including setting the event handler attributes).

HTH,
-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'