lhl
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myjadmin


			
				
					
						
						
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							{
  "title":"Custom Elements (V1)",
  "description":"One of the key features of the Web Components system, custom elements allow new HTML tags to be defined.",
  "spec":"https://html.spec.whatwg.org/multipage/scripting.html#custom-elements",
  "status":"ls",
  "links":[
    {
      "url":"https://developers.google.com/web/fundamentals/primers/customelements/",
      "title":"Google Developers - Custom elements v1: reusable web components"
    },
    {
      "url":"https://github.com/webcomponents/polyfills/tree/master/packages/custom-elements",
      "title":"customElements.define polyfill"
    },
    {
      "url":"https://webkit.org/blog/7027/introducing-custom-elements/",
      "title":"WebKit Blog: Introducing Custom Elements"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "DOM",
    "HTML5"
  ],
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  },
  "notes":"",
  "notes_by_num":{
    "1":"Supports \"Autonomous custom elements\" but not \"Customized built-in elements\" see [WebKit bug 182671](https://bugs.webkit.org/show_bug.cgi?id=182671).",
    "2":"Enabled through the `dom.webcomponents.enabled` preference in `about:config`.",
    "3":"Enabled through the `dom.webcomponents.customelements.enabled` preference in `about:config`."
  },
  "usage_perc_y":76.98,
  "usage_perc_a":18.65,
  "ucprefix":false,
  "parent":"",
  "keywords":"webcomponents,customelements",
  "ie_id":"customelements",
  "chrome_id":"4696261944934400,4670146924773376",
  "firefox_id":"custom-elements",
  "webkit_id":"feature-custom-elements",
  "shown":true
}