On Jan 8, 2012, at 7:20 PM, John J Barton wrote: > On Sun, Jan 8, 2012 at 3:35 PM, Brendan Eich <bren...@mozilla.com> wrote: >> Firebug uses a library bind a lot, and we continually struggled with the >> memoization problem; we did not try to solve it in part because we hated >> Firebug's bind: it made debugging even more painful since it messes up the >> call stack. Using the ES bind() ends up not being a win, since I now have >> exactly the same problems. > > I have a question: why is bind used so much in Firebug for event listeners, > when the DOM guarantees to dispatch them with the event target bound to > |this|? Way back in '95, I created event handlers but did not add bind (it > had to be discovered later). But dynamic |this| binding combined with DOM > event target-based listening and handling kept this properly bound. What has > changed? > > Sorry I don't know what you mean here.
Why all the this-binding in Firebug if (as you suggested and a grep seems to confirm [but I skimmed]) the methods being this-bound are all or mostly event listeners? The DOM dispatches event handlers on the correct |this|. Why not use dynamic (unbound) |this|? /be
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