{
 "notes": "Mac OS X \"Full Keyboard Access\" refers to setting Keyboard→Shortcuts→Full Keyboard Access to \"All controls\" in the System Preferences.\r\n\r\n\"Unknown\" support for mobile browsers is due to lacking a method of tabbing through fields.", 
 "support": {
  "Android Browser": "u 67", 
  "Baidu Browser": "u 7.12", 
  "Blackberry Browser": "u 10", 
  "Chrome": "y 15", 
  "Chrome for Android": "y 74", 
  "Edge": "y 12", 
  "Firefox": "y 4", 
  "Firefox for Android": "y 66", 
  "IE": "y 7", 
  "IE Mobile": "u 11", 
  "KaiOS Browser": "y 2.5", 
  "Opera": "y 9.5", 
  "Opera Mini": "u all", 
  "Opera Mobile": "u 46", 
  "QQ Browser": "n 1.2", 
  "Safari": "y 5.1", 
  "Samsung Internet": "u 9.2", 
  "UC Browser for Android": "u 11.8", 
  "iOS Safari": "y 3.2"
 }, 
 "url": "https://html.spec.whatwg.org/multipage/interaction.html#attr-tabindex"
}