android - A standard for 'Previous' and 'Next' buttons in mobile browsers -


ive noticed mobile browsers (ie chrome android , safari ios ) display 'next' , 'previous' buttons on pages contain forms when clicked, change focus different element in form.

i wondering if there common standard determined when these buttons appeared , in order elements focused on? reason ask have noticed pages forms not result in these buttons appearing, , in cases appear order in elements focused on different.

the wikipedia article tabbing navigation mentions controls focused "left right within each row of controls" there tabindex html attribute suppose can used reference order.

and "when these buttons appear" question - not sure whether there defined standard criteria suppose it's related presence of buttons , input fields in page (for example search field , it's 'go' button)


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