3 ms·

> Live binds one event handler to a parent element and then simply watches for any events It's kinda different story and rather a hack than a standard approach

> Live binds one event handler to a parent element and then simply watches for any events It's kinda different story and rather a hack than a standard approach. And it's not always a cace, because it will handle the callbacks slower than a direct bind and therefore not always appropriate. In any case it's not what the test is intended to do. We test standard operations, that's all. Testing live with bind is like comparing apples with oranges. > How about '.Class .child:visible:not(.test):eq(1)'? Do you mean non-standard css-selectors? There is nothing to test, rightjs simply doesn't support them With rightjs you always can do it like that $$('.class').filter('visible');

IgorPartola 17y ago
While event delegation doesn't work 100% of the time (e.g. when another piece of code that uses capture instead of bubbling such as google maps API), I wouldn't consider it a hack. Of course event handling will be slower but we can test how much slower :). You can do that with jQuery as well and that's an ineresting performance comparison in itself. E.g. $('.class:visible:not(:eq(1))') vs $('.class').filter(':visible').not(':eq(1)'). I suspect it heavily depends on the size of the DOM tree and the number of elements.
- MadRabbit 17y ago
  At the beginning you're kinda was against the "make" test, because there is no such thing in jQuery, and now you practically offer the same thing, to test something that does exist in jQuery but doesn't in RighJS. You should choose already what do you stand for. But anyway, if you want to test it go ahead, you know where the code is. I suppose jQuery handles virtual selectors via JavaScript and therefore there will be no serious difference in performance. I even suspect that a single additional function in the filter method in RightJS will still work faster than several internal selectors in jQuery.

IgorPartola 17y ago

While event delegation doesn't work 100% of the time (e.g. when another piece of code that uses capture instead of bubbling such as google maps API), I wouldn't consider it a hack. Of course event handling will be slower but we can test how much slower :). You can do that with jQuery as well and that's an ineresting performance comparison in itself. E.g. $('.class:visible:not(:eq(1))') vs $('.class').filter(':visible').not(':eq(1)'). I suspect it heavily depends on the size of the DOM tree and the number of elements.

MadRabbit 17y ago
At the beginning you're kinda was against the "make" test, because there is no such thing in jQuery, and now you practically offer the same thing, to test something that does exist in jQuery but doesn't in RighJS. You should choose already what do you stand for. But anyway, if you want to test it go ahead, you know where the code is. I suppose jQuery handles virtual selectors via JavaScript and therefore there will be no serious difference in performance. I even suspect that a single additional function in the filter method in RightJS will still work faster than several internal selectors in jQuery.