$.fn.animate to implement deferreds

[danheberden]

Spoke with gnarf about this, our idea is to have the lastPromise available on the collection for animate, so:

$elements.animate( properties ).promise().then(
    function() { 
         /* gets called when ALL animations are complete */ 
    });

In this case, using with $.when would probably be the most advised route:

$.when( $elements.animate( properties ) ).then( fn );

The benefit would not only be for that particular animation set, but building a collection of them as well and being able to .then( fn ) once they are all done.

[gnarf]

There may be other .fn's that could provide a promise as well like .load()

[danheberden]

Since Addy was asking about it, I made a better "what the hell do I mean" fiddle:

​http://jsfiddle.net/danheberden/4upzp/

Of course, this only uses the newer method signature but hopefully illustrates the point.

[danheberden]

And a bit more real world example: ​http://bit.ly/eW36V7

[jaubourg]

​https://github.com/jquery/jquery/tree/fn.promise.1.6

[jaubourg]

​https://github.com/jquery/jquery/compare/e9905b15d4...2b70893928