On Fri, Jul 8, 2011 at 5:21 AM, Sean Hogan <shogu...@westnet.com.au> wrote: > > - MathJax (http://mathjax.org) is a JS lib that facilitates putting math > onto the web by converting LaTeX or MathML markup in a page to HTML. By > default MathJax triggers off the onload event to run this conversion on the > page. When content containing math is dynamically added to the page, MathJax > must be called manually to convert the new content. A DOM insertion listener > could potentially be used to handle this conversion automatically. > > - A similar use-case is element augmentation too complex for CSS :before > and :after > > - ARIA support in JS libs currently involves updating aria-attributes to be > appropriate to behavior the lib is implementing. Attribute mutation > listeners would allow an inverse approach - behaviors being triggered off > changes to aria-attributes. > > - DOM insertion and removal listeners could facilitate the implementation > of automatically updating Table-of-* (Headings / Images / etc). >
It seems like all 3 use cases here can be implemented by observers that are called AFTER the fact, and do not requiere any events or callbacks before mutation. - Ryosuke
