{
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          },
          "edge": {
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          "edge_mobile": {
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          },
          "firefox": {
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          },
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            "version_added": null
          },
          "opera_android": {
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            "version_added": null
          },
          "safari_ios": {
            "version_added": null
          },
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            "version_added": null
          }
        },
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          "standard_track": true,
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            },
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": {
              "version_added": "53"
            },
            "edge": {
              "version_added": false,
              "notes": "<a href='https://developer.microsoft.com/microsoft-edge/platform/status/shadowdom/'>Under consideration</a>"
            },
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              "version_added": false,
              "notes": "<a href='https://developer.microsoft.com/microsoft-edge/platform/status/shadowdom/'>Under consideration</a>"
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              ],
              "notes": "See <a href='https://bugzil.la/1205323'>bug 1205323</a>"
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              ],
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            },
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            },
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            },
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            },
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            },
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            },
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            },
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              "version_added": null
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            },
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            },
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            "chrome_android": {
              "version_added": "66"
            },
            "edge": {
              "version_added": false
            },
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              "version_added": false
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            "firefox": {
              "version_added": false
            },
            "firefox_android": {
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              "version_added": false
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                "version_removed": true,
                "prefix": "webkit"
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              {
                "version_added": "25",
                "version_removed": true,
                "prefix": "webkit"
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            ],
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              "version_added": false
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              "version_added": false
            },
            "opera": [
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                "version_added": "22",
                "notes": "In Opera 32, the ability to have multiple shadow roots was deprecated."
              },
              {
                "version_added": "15",
                "version_removed": true,
                "prefix": "webkit"
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            ],
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                "notes": "In Opera 32, the ability to have multiple shadow roots was deprecated."
              },
              {
                "version_added": "14",
                "version_removed": true,
                "prefix": "webkit"
              }
            ],
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              "version_added": null
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            "opera_android": {
              "version_added": null
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              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
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              "version_added": null
            },
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              "version_added": null
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              "version_added": null
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            "deprecated": false
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              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
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              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
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            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
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              "version_added": null
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          },
          "status": {
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            "standard_track": true,
            "deprecated": false
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              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
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              "version_added": null
            },
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              "version_added": null
            },
            "samsunginternet_android": {
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            }
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            "standard_track": true,
            "deprecated": false
          }
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      "hasAttribute": {
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          "support": {
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              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
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              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
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          "support": {
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              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "id": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/id",
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            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "insertAdjacentElement": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/insertAdjacentElement",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "insertAdjacentText": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/insertAdjacentText",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "localName": {
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/localName",
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            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "matches": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/matches",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": [
              {
                "version_added": "34"
              },
              {
                "version_added": true,
                "alternative_name": "webkitMatchesSelector"
              }
            ],
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "34"
              },
              {
                "version_added": "3.6",
                "alternative_name": "mozMatchesSelector",
                "notes": "Prior to Firefox 4, invalid selector strings caused false to be returned instead of throwing an exception."
              }
            ],
            "firefox_android": [
              {
                "version_added": "34"
              },
              {
                "version_added": "4",
                "alternative_name": "mozMatchesSelector",
                "notes": "Prior to Firefox 4, invalid selector strings caused false to be returned instead of throwing an exception."
              }
            ],
            "ie": [
              {
                "version_added": false
              },
              {
                "version_added": "9",
                "alternative_name": "msMatchesSelector"
              }
            ],
            "opera": [
              {
                "version_added": "21"
              },
              {
                "version_added": "15",
                "alternative_name": "webkitMatchesSelector"
              },
              {
                "version_added": "11.5",
                "alternative_name": "oMatchesSelector"
              }
            ],
            "opera_android": {
              "version_added": null
            },
            "safari": [
              {
                "version_added": "7"
              },
              {
                "version_added": "5",
                "alternative_name": "webkitMatchesSelector"
              }
            ],
            "safari_ios": {
              "version_added": "8"
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "namespaceURI": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/namespaceURI",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "prefix": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/prefix",
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            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/removeAttribute",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeAttributeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/removeAttributeNS",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeAttributeNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/removeAttributeNode",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttribute",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttributeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttributeNS",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttributeNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttributeNode",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttributeNodeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttributeNodeNS",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "shadowRoot": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/shadowRoot",
          "support": {
            "webview_android": {
              "version_added": "53"
            },
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": {
              "version_added": "53"
            },
            "edge": {
              "version_added": false,
              "notes": "<a href='https://developer.microsoft.com/microsoft-edge/platform/status/shadowdom/'>Under consideration</a>"
            },
            "edge_mobile": {
              "version_added": false,
              "notes": "<a href='https://developer.microsoft.com/microsoft-edge/platform/status/shadowdom/'>Under consideration</a>"
            },
            "firefox": {
              "version_added": "59",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.webcomponents.shadowdom.enabled",
                  "value_to_set": "true"
                }
              ],
              "notes": "See <a href='https://bugzil.la/1205323'>bug 1205323</a>"
            },
            "firefox_android": {
              "version_added": "59",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.webcomponents.shadowdom.enabled",
                  "value_to_set": "true"
                }
              ],
              "notes": "See <a href='https://bugzil.la/1205323'>bug 1205323</a>"
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "40"
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "slot": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/slot",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "tagName": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/tagName",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "webkitMatchesSelector": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/webkitMatchesSelector",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}