Me.WebTab1.ClientEvents.TabMoved = "WebTab1_TabMoved"
this.WebTab1.ClientEvents.TabMoved = "WebTab1_TabMoved";
// The client event TabMoved takes two parameters sender and e // sender is the object which is raising the event // e is the TabMovedEventArgs function WebTab1_TabMoved(sender, e) { //Gets the initial index of the tab var tabIndex = e.get_tabIndex(); //Gets the index of the tab when it is moving var tabVisibleIndex = e.get_tabVisibleIndex(); //Assuming you have a label called labelOutput on the form var label = $get('labelOutput'); label.innerHTML = "Tab Index : " + tabIndex + " ; Tab Visible Index : " + tabVisibleIndex; }