{
  "title":"Custom Elements (deprecated V0 spec)",
  "description":"Original V0 version of the custom elements specification. See [Custom Elements V1](#feat=custom-elementsv1) for support for the latest version. ",
  "spec":"https://www.w3.org/TR/custom-elements/",
  "status":"unoff",
  "links":[
    {
      "url":"https://www.polymer-project.org/platform/custom-elements.html",
      "title":"Polymer project (polyfill & web components framework)"
    },
    {
      "url":"https://www.html5rocks.com/tutorials/webcomponents/customelements/",
      "title":"HTML5Rocks - Custom Elements: defining new elements in HTML"
    },
    {
      "url":"https://github.com/WebReflection/document-register-element",
      "title":"document.registerElement polyfill in 3KB minified & gzipped"
    },
    {
      "url":"https://developers.google.com/web/fundamentals/primers/customelements/",
      "title":"Google Developers - Custom elements v1: reusable web components"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "DOM",
    "HTML5"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"p",
      "11":"p"
    },
    "edge":{
      "12":"p",
      "13":"p",
      "14":"p",
      "15":"p",
      "16":"p",
      "17":"p",
      "18":"p",
      "76":"n"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"n",
      "3.6":"n",
      "4":"n",
      "5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n",
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"n",
      "16":"n",
      "17":"n",
      "18":"n",
      "19":"n",
      "20":"n",
      "21":"n",
      "22":"n",
      "23":"n d #1",
      "24":"n d #1",
      "25":"n d #1",
      "26":"n d #1",
      "27":"n d #1",
      "28":"n d #1",
      "29":"n d #1",
      "30":"p d #1",
      "31":"p d #1",
      "32":"p d #1",
      "33":"p d #1",
      "34":"p d #1",
      "35":"p d #1",
      "36":"p d #1",
      "37":"p d #1",
      "38":"p d #1",
      "39":"p d #1",
      "40":"p d #1",
      "41":"p d #1",
      "42":"p d #1",
      "43":"p d #1",
      "44":"p d #1",
      "45":"p d #1",
      "46":"p d #1",
      "47":"p d #1",
      "48":"p d #1",
      "49":"p d #1",
      "50":"p d #1",
      "51":"p d #1",
      "52":"p d #1",
      "53":"p d #1",
      "54":"p d #1",
      "55":"p d #1",
      "56":"p d #1",
      "57":"p d #1",
      "58":"p d #1",
      "59":"n",
      "60":"n",
      "61":"n",
      "62":"n",
      "63":"n",
      "64":"n",
      "65":"n",
      "66":"n",
      "67":"n",
      "68":"n",
      "69":"n",
      "70":"n",
      "71":"n"
    },
    "chrome":{
      "4":"n",
      "5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n",
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"n",
      "16":"n",
      "17":"n",
      "18":"n",
      "19":"n",
      "20":"n",
      "21":"n",
      "22":"n",
      "23":"n",
      "24":"n",
      "25":"n",
      "26":"n",
      "27":"n d",
      "28":"n d",
      "29":"n d",
      "30":"n d",
      "31":"n d",
      "32":"n d",
      "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",
      "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",
      "68":"y",
      "69":"y",
      "70":"y",
      "71":"y",
      "72":"y",
      "73":"y",
      "74":"y",
      "75":"y",
      "76":"y",
      "77":"y",
      "78":"y",
      "79":"y",
      "80":"y"
    },
    "safari":{
      "3.1":"n",
      "3.2":"n",
      "4":"n",
      "5":"n",
      "5.1":"n",
      "6":"p",
      "6.1":"p",
      "7":"p",
      "7.1":"p",
      "8":"p",
      "9":"p",
      "9.1":"p",
      "10":"p",
      "10.1":"p",
      "11":"p",
      "11.1":"p",
      "12":"p",
      "12.1":"p",
      "13":"p",
      "TP":"p"
    },
    "opera":{
      "9":"n",
      "9.5-9.6":"n",
      "10.0-10.1":"n",
      "10.5":"n",
      "10.6":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "11.6":"n",
      "12":"n",
      "12.1":"n",
      "15":"n d",
      "16":"n d",
      "17":"n d",
      "18":"n d",
      "19":"n d",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "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",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "60":"y",
      "62":"y"
    },
    "ios_saf":{
      "3.2":"n",
      "4.0-4.1":"n",
      "4.2-4.3":"n",
      "5.0-5.1":"n",
      "6.0-6.1":"n",
      "7.0-7.1":"p",
      "8":"p",
      "8.1-8.4":"p",
      "9.0-9.2":"p",
      "9.3":"p",
      "10.0-10.2":"p",
      "10.3":"p",
      "11.0-11.2":"p",
      "11.3-11.4":"p",
      "12.0-12.1":"p",
      "12.2-12.3":"p",
      "13":"p"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"n",
      "4.4.3-4.4.4":"y",
      "76":"n"
    },
    "bb":{
      "7":"n",
      "10":"n"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "12":"n",
      "12.1":"n",
      "46":"y"
    },
    "and_chr":{
      "76":"n"
    },
    "and_ff":{
      "68":"n"
    },
    "ie_mob":{
      "10":"n",
      "11":"n"
    },
    "and_uc":{
      "12.12":"y"
    },
    "samsung":{
      "4":"y",
      "5.0-5.4":"y",
      "6.2-6.4":"y",
      "7.2-7.4":"y",
      "8.2":"y",
      "9.2":"y"
    },
    "and_qq":{
      "1.2":"y"
    },
    "baidu":{
      "7.12":"y"
    },
    "kaios":{
      "2.5":"p d #1"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"Enabled through the \"dom.webcomponents.enabled\" preference in about:config",
    "2":"Enabled through the \"dom.webcomponents.customelements.enabled\" preference in about:config"
  },
  "usage_perc_y":38,
  "usage_perc_a":0,
  "ucprefix":false,
  "parent":"",
  "keywords":"document.registerElement",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}