What determines the tab order?
Control tab order is determined by the order in which controls are drawn on the screen. The first control that you draw is assigned a tab order of 1 , the next is given tab order number 2 , and so on.
What is tab order in accessibility?
The tab order should follow the visual flow of the page: left to right, top to bottom – header first, then main navigation, then page navigation (if present), and finally the footer.