Just to clarify a couple of things, here's how new Element works: 1. we use document.createElement the first time its called, extend the generated element and cache it. 2. when you create a second element with the same tag name, we just clone the cached element.
The IE "technique" you are referring to is just a special casing for IE 's poor handling of the name attribute. Hope this helps, Regards, Tobie 2. we store a cloned Extended version of t On Aug 9, 8:06 am, Tom Gregory <[EMAIL PROTECTED]> wrote: > It would. Although again I disagree with your conclusion as to why. > (But it does reinforce my previous assertion that most of the > slowdown you were seeing was due to element creation.) > > The prototype DOM builder uses a technique unique to IE to create the > elements (in IE only), which (being similar to the innerHTML solution > which has been proven to be decently fast in IE), is much faster than > document.createElement. > > I don't buy the "slowness caused by extending" argument, because a) > it didn't go away in your new test, and yet you saw speedup, and b) > Prototype's DOM builder (i.e. new Element) extends elements too. > > Oh, ... and there are too many Tom's on this thread. Some of you > will have to change your name. =) > > TAG > > On Aug 9, 2007, at 1:05 AM, Tom wrote: > > > I believe the slowness is caused by the speed (or lack thereof) of > > extending each element during the call to Event.observe (element=$ > > (element)) in IE. Using the new DOM Builder functionality in the trunk > > branch (http://www.prototypejs.org/2007/5/12/dom-builder) and > > replacing > > > var el=document.createElement("div"); > > el.className = "dot"; > > > with > > > var el = new Element('div',{className : "dot"}); //Uses the > > DOM Builder functionality to create the element already extended > > > brings the speeds of the browsers much closer together > > > Tom --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Spinoffs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/rubyonrails-spinoffs?hl=en -~----------~----~----~----~------~----~------~--~---
