[whatwg] Repetition Model

[Dean Edwards]

Olav Junker Kjær wrote:
> Dean Edwards wrote:
> 
>> Yes you would have to iterate over each element to attach the 
>> repetition template interface. Olav Junker Kjær provided a solution to 
>> this speed this up a little:
> 
> 
> It should be said that the expression-based solution improves the 
> initial rendering, but slows the page considerably afterwards, since the 
> CSS expressions are recalculated continuously. The expression rules 
> could be removed after initial rendering to improve performance, but 
> then it wont work if the repeat attribute is added to an element 
> dynamically. So its not the perfect solution.
> 

I've been working on perfecting this technique. There is a way to 
disable it once each element has been checked.

It is still an acceptable compromise to require the author to attach 
this behavior.

tr.repeat {
     behavior: url(...);
}

bearing in mind the complexity of the repetition model, the author 
should be able to manage the CSS quite easily...

-dean