Using the HTML tabindex attribute

Overview

Currently it is conforming in HTML for the tabindex attribute to have a value of less than 0, 0 or greater than 0. It is contended that when the tabindex attribute has a value greater than 0 it regularly causes focus order issues for some users. Due to the perceived negative consequences of tabindex values >0 it has been proposed that the permitted values of tabindex be constrained to 0 and -1.

Discussion

Proposal to change documentation on tabindex to strongly discourage values greater 0
Bug 27076 (W3C HTML) - Change tabIndex spec to only declare 0 and -1 as valid values
- Bug 27089 (W3C HTML bug cloned - WHATWG HTML)
Article: Using the tabindex attribute