Comments on: JavaScript optimization Part 3: Attaching events

By: ror

ror — Fri, 12 Mar 2010 12:12:00 +0000

UJS Rails Plugin rules!

By: Kniaź

Kniaź — Fri, 12 Mar 2010 18:56:00 +0000

I’m sure also, that Your code using “manual” events setting would be little faster if you checking event’s attaching methods existence once. On attaching example:

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// Attaching events
if (items[0].addEventListener) {
for (var i = items.length; i--; ) {
items[i].addEventListener('click', e_onclick, false);
}
} else if (items[0].attachEvent) {
for (var i = items.length; i--; ) {
items[i].attachEvent('onclick', e_onclick);
}
}

Look also on brilliant idea in one of last slide of Dan Webb’s presentation here:
http://www.danwebb.net/2007/11/22/media-ajax

btw. thx for the link to Low Pro :-)

By: Dmytro Shteflyuk

Dmytro Shteflyuk — Fri, 12 Mar 2010 13:07:00 +0000

Спасибо за ссылку и за баг :-) Будем посмотреть

By: vectoroc

vectoroc — Fri, 12 Mar 2010 12:54:00 +0000

очень много дельных советов можно почерпнуть из этой статьи

ps. OpenID не отработал

1	Fatal error: Call to undefined function curl_init() in /var/www/kpumuk/kpumuk.info/wp-content/plugins/openid/openid-classes.php on line 229

By: JavaScript: Оптимизация при подписке на события » Wake Up!

JavaScript: Оптимизация при подписке на события » Wake Up! — Fri, 12 Mar 2010 22:16:00 +0000

[...] Что лучше использовать при подписке на события – фреймвор или делать это вручную? ответ здесь [...]

By: All in a days work…

All in a days work… — Fri, 12 Mar 2010 06:28:00 +0000

[...] JavaScript optimization Part 3: Attaching events [...]

By: Dmytro Shteflyuk

Dmytro Shteflyuk — Fri, 12 Mar 2010 16:05:00 +0000

Thank you, Enrique
You right, of course. It’s better to use one event observer for parent element instead of separate observers for each child node. Great tip!

By: Enrique Melendez

Enrique Melendez — Fri, 12 Mar 2010 13:13:00 +0000

Great article,
One thing to take into consideration about applying events (apart from “how”) is “where”.

I mean, for example, it’s far better to attach ONE “mouseover” event to a whole “tbody” and capture the “td” source which fired it than to attach many of “mouseover”s to ALL “td”s…

So, for speed reasons it is crucial “where” do you attach your events…

By: Dev::Info

Dev::Info — Fri, 12 Mar 2010 12:47:00 +0000

Optimalizace JavaScriptu…

Dmitrij Štefljuk píše velmi zajímavý seriál o optimalizaci JavaScriptu. Doporučuji všem, co se zabývají JavaScriptem.

…

By: http://kovyrin.info/curriculum-vitae/

http://kovyrin.info/curriculum-vitae/ — Fri, 12 Mar 2010 08:17:00 +0000

Thanks for really interesting post and for mentioning Low Pro.