> >### Check if the UI really needs to be updated ### > >An easy trick is to check if an UI element is already updated and do nothing > >if so instead of updating it anyway. So, > >for example > >if(element.text!=newText) element.text=newText; > >is (apparently) faster than without the check. > > > While this used to be true, setAttribute now has an internal check for > this, although there is unfortunately old code still out there that > hasn't been updated to avoid the now useless getAttribute call.
Interestingly. Do you have a bug at hand? And do you know if it applies to JS setters as well (e.g. element.value=123)? If not, it's worth to note that either if+setter or setAttribute should be utilized. Greetings xeen _______________________________________________ Project_owners mailing list [email protected] https://www.mozdev.org/mailman/listinfo/project_owners
