{
  "api": {
    "EventTarget": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget",
        "support": {
          "webview_android": {
            "version_added": "1"
          },
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": {
            "version_added": "1"
          },
          "edge": {
            "version_added": true
          },
          "edge_mobile": {
            "version_added": true
          },
          "firefox": {
            "version_added": "1"
          },
          "firefox_android": {
            "version_added": "4"
          },
          "ie": {
            "version_added": "9"
          },
          "opera": {
            "version_added": "7"
          },
          "opera_android": {
            "version_added": "7"
          },
          "safari": [
            {
              "version_added": "10.1"
            },
            {
              "version_added": "1",
              "version_removed": "10.1",
              "notes": "<code>Window.EventTarget</code> did not exist on versions of Safari before 10.1."
            }
          ],
          "safari_ios": [
            {
              "version_added": "10.1"
            },
            {
              "version_added": "1",
              "version_removed": "10.1",
              "notes": "<code>Window.EventTarget</code> did not exist on versions of Safari iOS before 10.1."
            }
          ],
          "samsunginternet_android": {
            "version_added": true
          }
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "EventTarget": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/EventTarget",
          "description": "<code>EventTarget()</code> constructor",
          "support": {
            "webview_android": {
              "version_added": "64"
            },
            "chrome": {
              "version_added": "64"
            },
            "chrome_android": {
              "version_added": "64"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": {
              "version_added": "59"
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "51"
            },
            "opera_android": {
              "version_added": "51"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "addEventListener": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/addEventListener",
          "support": {
            "webview_android": {
              "version_added": "1",
              "notes": "Before Chrome 49, the <code>type</code> and <code>listener</code> parameters were optional."
            },
            "chrome": {
              "version_added": "1",
              "notes": "Before Chrome 49, the <code>type</code> and <code>listener</code> parameters were optional."
            },
            "chrome_android": {
              "version_added": "1",
              "notes": "Before Chrome 49, the <code>type</code> and <code>listener</code> parameters were optional."
            },
            "edge": {
              "version_added": "12"
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": [
              {
                "version_added": "9"
              },
              {
                "alternative_name": "attachEvent",
                "version_added": true,
                "notes": "Older versions of IE supported an equivalent, proprietary, <code>EventTarget.attachEvent()</code> method."
              }
            ],
            "opera": {
              "version_added": "7"
            },
            "opera_android": {
              "version_added": "7"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "optional_usecapture": {
          "__compat": {
            "description": "<code>useCapture</code> parameter made optional",
            "support": {
              "webview_android": {
                "version_added": "1"
              },
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "1"
              },
              "edge": {
                "version_added": true
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": {
                "version_added": "6"
              },
              "firefox_android": {
                "version_added": "6"
              },
              "ie": {
                "version_added": "9"
              },
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "11.6"
              },
              "safari": {
                "version_added": true
              },
              "safari_ios": {
                "version_added": true
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options": {
          "__compat": {
            "description": "Form with <code>options</code> object supported (third parameter can be either options or a <code>Boolean</code>, for backwards compatibility)",
            "support": {
              "webview_android": {
                "version_added": "49"
              },
              "chrome": {
                "version_added": "49"
              },
              "chrome_android": {
                "version_added": "49"
              },
              "edge": {
                "version_added": true
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": {
                "version_added": "49"
              },
              "firefox_android": {
                "version_added": "49"
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": "10"
              },
              "safari_ios": {
                "version_added": "10"
              },
              "samsunginternet_android": {
                "version_added": "5.0"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "capture": {
            "__compat": {
              "description": "<code>capture</code> option",
              "support": {
                "webview_android": {
                  "version_added": "52"
                },
                "chrome": {
                  "version_added": "52"
                },
                "chrome_android": {
                  "version_added": "52"
                },
                "edge": {
                  "version_added": true
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": true
                },
                "firefox_android": {
                  "version_added": true
                },
                "ie": {
                  "version_added": false
                },
                "opera": {
                  "version_added": true
                },
                "opera_android": {
                  "version_added": true
                },
                "safari": {
                  "version_added": true
                },
                "safari_ios": {
                  "version_added": true
                },
                "samsunginternet_android": {
                  "version_added": "6.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "once": {
            "__compat": {
              "description": "<code>once</code> option",
              "support": {
                "webview_android": {
                  "version_added": "55"
                },
                "chrome": {
                  "version_added": "55"
                },
                "chrome_android": {
                  "version_added": "55"
                },
                "edge": {
                  "version_added": true
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "50"
                },
                "firefox_android": {
                  "version_added": "50"
                },
                "ie": {
                  "version_added": false
                },
                "opera": {
                  "version_added": "42"
                },
                "opera_android": {
                  "version_added": "42"
                },
                "safari": {
                  "version_added": true
                },
                "safari_ios": {
                  "version_added": true
                },
                "samsunginternet_android": {
                  "version_added": "6.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "passive": {
            "__compat": {
              "description": "<code>passive</code> option",
              "support": {
                "webview_android": {
                  "version_added": "51"
                },
                "chrome": {
                  "version_added": "51"
                },
                "chrome_android": {
                  "version_added": "51"
                },
                "edge": {
                  "version_added": true
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": true
                },
                "firefox_android": {
                  "version_added": true
                },
                "ie": {
                  "version_added": false
                },
                "opera": {
                  "version_added": true
                },
                "opera_android": {
                  "version_added": true
                },
                "safari": {
                  "version_added": true
                },
                "safari_ios": {
                  "version_added": true
                },
                "samsunginternet_android": {
                  "version_added": "5.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "passive_true_touch": {
            "__compat": {
              "description": "<code>passive</code> option defaults to <code>true</code> for <code>touchstart</code> and <code>touchmove</code> events",
              "support": {
                "webview_android": {
                  "version_added": "55"
                },
                "chrome": {
                  "version_added": "55"
                },
                "chrome_android": {
                  "version_added": "55"
                },
                "edge": {
                  "version_added": false
                },
                "edge_mobile": {
                  "version_added": false
                },
                "firefox": {
                  "version_added": "61"
                },
                "firefox_android": {
                  "version_added": "61"
                },
                "ie": {
                  "version_added": false
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": false
                },
                "safari_ios": {
                  "version_added": false
                },
                "samsunginternet_android": {
                  "version_added": "6.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        }
      },
      "dispatchEvent": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/dispatchEvent",
          "support": {
            "webview_android": {
              "version_added": "4"
            },
            "chrome": {
              "version_added": "4"
            },
            "chrome_android": {
              "version_added": "4"
            },
            "edge": {
              "version_added": "12"
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": "2"
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": [
              {
                "version_added": "9"
              },
              {
                "alternative_name": "fireEvent",
                "version_added": true,
                "notes": "Older versions of IE supported an equivalent, proprietary, <code>EventTarget.fireEvent()</code> method."
              }
            ],
            "opera": {
              "version_added": "9"
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "3.2"
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeEventListener": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener",
          "support": {
            "webview_android": {
              "version_added": "1"
            },
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": "1"
            },
            "edge": {
              "version_added": "12"
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": "7"
            },
            "opera_android": {
              "version_added": "7"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "optional_usecapture": {
          "__compat": {
            "description": "<code>useCapture</code> parameter optional",
            "support": {
              "webview_android": {
                "version_added": "1"
              },
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "1"
              },
              "edge": {
                "version_added": true
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": {
                "version_added": "6"
              },
              "firefox_android": {
                "version_added": "6"
              },
              "ie": {
                "version_added": "9"
              },
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "11.6"
              },
              "safari": {
                "version_added": true
              },
              "safari_ios": {
                "version_added": true
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "optional_type_listener": {
          "__compat": {
            "description": "<code>type</code> and <code>listener</code> parameters optional.",
            "support": {
              "webview_android": {
                "version_added": "1",
                "version_removed": "49"
              },
              "chrome": {
                "version_added": "1",
                "version_removed": "49"
              },
              "chrome_android": {
                "version_added": "1",
                "version_removed": "49"
              },
              "edge": {
                "version_added": true
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": {
                "version_added": true
              },
              "firefox_android": {
                "version_added": true
              },
              "ie": {
                "version_added": true
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": true
              },
              "safari_ios": {
                "version_added": true
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options": {
          "__compat": {
            "description": "Form with <code>options</code> object supported (third parameter can be either options or a <code>Boolean</code>, for backwards compatibility)",
            "support": {
              "webview_android": {
                "version_added": "49"
              },
              "chrome": {
                "version_added": "49"
              },
              "chrome_android": {
                "version_added": "49"
              },
              "edge": {
                "version_added": true
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": {
                "version_added": "49"
              },
              "firefox_android": {
                "version_added": "49"
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": "10"
              },
              "safari_ios": {
                "version_added": "10"
              },
              "samsunginternet_android": {
                "version_added": "5.0"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}