{
  "title":"Constraint Validation API",
  "description":"API for better control over form field validation. Includes support for `checkValidity()`, `setCustomValidity()`, `reportValidity()` and validation states.",
  "spec":"https://html.spec.whatwg.org/dev/form-control-infrastructure.html#the-constraint-validation-api",
  "status":"ls",
  "links":[
    {
      "url":"https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation",
      "title":"MDN article on constraint validation"
    },
    {
      "url":"https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/14744163-support-htmlformelement-reportvalidity",
      "title":"MS Edge UserVoice request for reportValidity"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "JS API"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"a #1 #2 #3",
      "11":"a #1 #2 #3"
    },
    "edge":{
      "12":"a #1 #2 #3",
      "13":"a #1 #2 #3",
      "14":"a #1 #2",
      "15":"a #1 #2",
      "16":"a #1 #2",
      "17":"y"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"n",
      "3.6":"n",
      "4":"a #1 #2 #3",
      "5":"a #1 #2 #3",
      "6":"a #1 #2 #3",
      "7":"a #1 #2 #3",
      "8":"a #1 #2 #3",
      "9":"a #1 #2 #3",
      "10":"a #1 #2 #3",
      "11":"a #1 #2 #3",
      "12":"a #1 #2 #3",
      "13":"a #1 #2 #3",
      "14":"a #1 #2 #3",
      "15":"a #1 #2 #3",
      "16":"a #1 #2 #3",
      "17":"a #1 #2 #3",
      "18":"a #1 #2 #3",
      "19":"a #1 #2 #3",
      "20":"a #1 #2 #3",
      "21":"a #1 #2 #3",
      "22":"a #1 #2 #3",
      "23":"a #1 #2 #3",
      "24":"a #1 #2 #3",
      "25":"a #1 #2 #3",
      "26":"a #1 #2 #3",
      "27":"a #1 #2 #3",
      "28":"a #1 #2 #3",
      "29":"a #1 #2",
      "30":"a #1 #2",
      "31":"a #1 #2",
      "32":"a #1 #2",
      "33":"a #1 #2",
      "34":"a #1 #2",
      "35":"a #1 #2",
      "36":"a #1 #2",
      "37":"a #1 #2",
      "38":"a #1 #2",
      "39":"a #1 #2",
      "40":"a #1 #2",
      "41":"a #1 #2",
      "42":"a #1 #2",
      "43":"a #1 #2",
      "44":"a #1 #2",
      "45":"a #1 #2",
      "46":"a #1 #2",
      "47":"a #1 #2",
      "48":"a #1 #2",
      "49":"a #2",
      "50":"a #2",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y"
    },
    "chrome":{
      "4":"u",
      "5":"u",
      "6":"u",
      "7":"u",
      "8":"u",
      "9":"u",
      "10":"u",
      "11":"u",
      "12":"u",
      "13":"u",
      "14":"u",
      "15":"a #1 #2 #3",
      "16":"a #1 #2 #3",
      "17":"a #1 #2 #3",
      "18":"a #1 #2 #3",
      "19":"a #1 #2 #3",
      "20":"a #1 #2 #3",
      "21":"a #1 #2 #3",
      "22":"a #1 #2 #3",
      "23":"a #1 #2 #3",
      "24":"a #1 #2 #3",
      "25":"a #1 #2",
      "26":"a #1 #2",
      "27":"a #1 #2",
      "28":"a #1 #2",
      "29":"a #1 #2",
      "30":"a #1 #2",
      "31":"a #1 #2",
      "32":"a #1 #2",
      "33":"a #1 #2",
      "34":"a #1 #2",
      "35":"a #1 #2",
      "36":"a #1 #2",
      "37":"a #1 #2",
      "38":"a #1 #2",
      "39":"a #1 #2",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y"
    },
    "safari":{
      "3.1":"u",
      "3.2":"u",
      "4":"u",
      "5":"u",
      "5.1":"a #1 #2 #3",
      "6":"a #1 #2 #3",
      "6.1":"a #1 #2 #3",
      "7":"a #1 #2 #3",
      "7.1":"a #1 #2",
      "8":"a #1 #2",
      "9":"a #1 #2",
      "9.1":"a #1 #2",
      "10":"y",
      "10.1":"y",
      "11":"y",
      "11.1":"y",
      "TP":"y"
    },
    "opera":{
      "9":"u",
      "9.5-9.6":"u",
      "10.0-10.1":"u",
      "10.5":"u",
      "10.6":"u",
      "11":"u",
      "11.1":"u",
      "11.5":"u",
      "11.6":"a #1 #2 #3",
      "12":"a #1 #2 #3",
      "12.1":"a #1 #2 #3",
      "15":"a #1 #2",
      "16":"a #1 #2",
      "17":"a #1 #2",
      "18":"a #1 #2",
      "19":"a #1 #2",
      "20":"a #1 #2",
      "21":"a #1 #2",
      "22":"a #1 #2",
      "23":"a #1 #2",
      "24":"a #1 #2",
      "25":"a #1 #2",
      "26":"a #1 #2",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y"
    },
    "ios_saf":{
      "3.2":"u",
      "4.0-4.1":"u",
      "4.2-4.3":"u",
      "5.0-5.1":"a #1 #2 #3",
      "6.0-6.1":"a #1 #2 #3",
      "7.0-7.1":"a #1 #2",
      "8":"a #1 #2",
      "8.1-8.4":"a #1 #2",
      "9.0-9.2":"a #1 #2",
      "9.3":"a #1 #2",
      "10.0-10.2":"y",
      "10.3":"y",
      "11.0-11.2":"y",
      "11.3":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"u",
      "2.2":"u",
      "2.3":"u",
      "3":"u",
      "4":"a #1 #2 #3",
      "4.1":"a #1 #2 #3",
      "4.2-4.3":"a #1 #2 #3",
      "4.4":"a #1 #2",
      "4.4.3-4.4.4":"a #1 #2",
      "62":"y"
    },
    "bb":{
      "7":"u",
      "10":"a #1 #2"
    },
    "op_mob":{
      "10":"u",
      "11":"u",
      "11.1":"u",
      "11.5":"u",
      "12":"a #1 #2 #3",
      "12.1":"a #1 #2 #3",
      "37":"y"
    },
    "and_chr":{
      "64":"y"
    },
    "and_ff":{
      "57":"y"
    },
    "ie_mob":{
      "10":"a #1 #2 #3",
      "11":"a #1 #2 #3"
    },
    "and_uc":{
      "11.8":"y"
    },
    "samsung":{
      "4":"y",
      "5":"y",
      "6.2":"y"
    },
    "and_qq":{
      "1.2":"a #1 #2"
    },
    "baidu":{
      "7.12":"y"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"Does not support `reportValidity`",
    "2":"Does not support `validity.tooShort`. See also [support for `minlength`.](https://caniuse.com/#feat=input-minlength)",
    "3":"Does not support `validity.badInput`"
  },
  "usage_perc_y":85.87,
  "usage_perc_a":8.79,
  "ucprefix":false,
  "parent":"",
  "keywords":"",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}