There is a new method for loading pages using AJAX user interface (UI) following the introduction of SugarCRM version 6.3. It loads html contents instead of making a full page refresh. Below are some major advantages that this method has to offer on SugarCRM performance.
Server load is reduced
Full rebuilding of the Dom tree is not necessarily required
The center area of the content is set to be modified instead of destroying or rebuilding the whole Dom.
Script files are not longer required to be parsed
The number of request per page is minimized
The addition of AjaxUI also brought some adverse impacts in terms of customizations.
• Because of the loaded web page before the insertion of the main web content, onLoad can no longer be trusted.