Comments on: JavaScript optimization Part 3: Attaching events

By: Kniaź

Kniaź — Wed, 30 Nov 2005 00:00:00 +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:

// 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 — Thu, 30 Nov 2000 00:00:00 +0000

Спасибо за ссылку и за баг Будем посмотреть

By: vectoroc

vectoroc — Wed, 30 Nov 2011 00:00:00 +0000

очень много дельных советов можно почерпнуть из этой статьи

ps. OpenID не отработал

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! — Mon, 30 Nov 2009 00:00:00 +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… — Wed, 30 Nov 2005 00:00:00 +0000

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

By: Dmytro Shteflyuk

Dmytro Shteflyuk — Sun, 30 Nov 2003 00:00:00 +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 — Thu, 30 Nov 2000 00:00:00 +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 — Wed, 30 Nov 2011 00:00:00 +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, 30 Nov 2007 00:00:00 +0000

Thanks for really interesting post and for mentioning Low Pro.