The dhtmlxTreeView onClick event is not blockable. According to your docs it should have been added in version 5.1. docs.dhtmlx.com/api__dhtmlxtree … event.html. I need the ability to return false when a node is clicked/selected to force them to stay on the current node. Is there a fix coming soon? Thanks!
Unfortunately this is the bug in the documentation. onClick event cannot be used to block the selection in the treeview.
If the requirement is critical for you please. open ticket at support.dhtmlx.com so the custom fix could be created and provided.