{
    "dom-performance-clearmarks": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/Performance.json",
            "name": "clearMarks",
            "slug": "API/Performance/clearMarks",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearMarks",
            "summary": "The clearMarks() method removes all or specific PerformanceMark objects from the browser's performance timeline.",
            "support": {
                "chrome": [
                    {
                        "version_added": "29"
                    },
                    {
                        "version_added": "25",
                        "version_removed": "29",
                        "prefix": "webkit"
                    }
                ],
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "38"
                },
                "firefox_android": {
                    "version_added": "42"
                },
                "ie": {
                    "version_added": "10"
                },
                "nodejs": {
                    "version_added": "8.5.0"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "33"
                },
                "opera_android": {
                    "version_added": "33"
                },
                "safari": {
                    "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": [
                    {
                        "version_added": "79"
                    },
                    {
                        "version_added": false,
                        "version_removed": "29",
                        "prefix": "webkit"
                    }
                ]
            },
            "title": "Performance: clearMarks() method"
        }
    ],
    "dom-performance-clearmeasures": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/Performance.json",
            "name": "clearMeasures",
            "slug": "API/Performance/clearMeasures",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearMeasures",
            "summary": "The clearMeasures() method removes all or specific PerformanceMeasure objects from the browser's performance timeline.",
            "support": {
                "chrome": [
                    {
                        "version_added": "29"
                    },
                    {
                        "version_added": "25",
                        "version_removed": "29",
                        "prefix": "webkit"
                    }
                ],
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "38"
                },
                "firefox_android": {
                    "version_added": "42"
                },
                "ie": {
                    "version_added": "10"
                },
                "nodejs": {
                    "version_added": "16.7.0"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "33"
                },
                "opera_android": {
                    "version_added": "33"
                },
                "safari": {
                    "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": [
                    {
                        "version_added": "79"
                    },
                    {
                        "version_added": false,
                        "version_removed": "29",
                        "prefix": "webkit"
                    }
                ]
            },
            "title": "Performance: clearMeasures() method"
        }
    ],
    "dom-performance-mark": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/Performance.json",
            "name": "mark",
            "slug": "API/Performance/mark",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/mark",
            "summary": "The mark() method creates a named PerformanceMark object representing a high resolution timestamp marker in the browser's performance timeline.",
            "support": {
                "chrome": [
                    {
                        "version_added": "28"
                    },
                    {
                        "prefix": "webkit",
                        "version_added": "25",
                        "version_removed": "28"
                    }
                ],
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "38"
                },
                "firefox_android": {
                    "version_added": "42"
                },
                "ie": {
                    "version_added": "10"
                },
                "nodejs": {
                    "version_added": "8.5.0"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "33"
                },
                "opera_android": {
                    "version_added": "33"
                },
                "safari": {
                    "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": [
                    {
                        "version_added": "79"
                    },
                    {
                        "prefix": "webkit",
                        "version_added": false,
                        "version_removed": "28"
                    }
                ]
            },
            "title": "Performance: mark() method"
        }
    ],
    "dom-performance-measure": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/Performance.json",
            "name": "measure",
            "slug": "API/Performance/measure",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/measure",
            "summary": "The measure() method creates a named PerformanceMeasure object representing a time measurement between two marks in the browser's performance timeline.",
            "support": {
                "chrome": [
                    {
                        "version_added": "28"
                    },
                    {
                        "prefix": "webkit",
                        "version_added": "25",
                        "version_removed": "28"
                    }
                ],
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "38"
                },
                "firefox_android": {
                    "version_added": "42"
                },
                "ie": {
                    "version_added": "10"
                },
                "nodejs": {
                    "version_added": "8.5.0"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "33"
                },
                "opera_android": {
                    "version_added": "33"
                },
                "safari": {
                    "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": [
                    {
                        "version_added": "79"
                    },
                    {
                        "prefix": "webkit",
                        "version_added": false,
                        "version_removed": "28"
                    }
                ]
            },
            "title": "Performance: measure() method"
        }
    ],
    "extensions-performance-interface": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/Performance.json",
            "name": "Performance",
            "slug": "API/Performance",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance",
            "summary": "The Performance interface provides access to performance-related information for the current page.",
            "support": {
                "chrome": {
                    "version_added": "6"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.0"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "7"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "9"
                },
                "nodejs": {
                    "version_added": "8.5.0",
                    "notes": "Exported from the <code>perf_hooks</code> module",
                    "partial_implementation": true
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "8"
                },
                "safari_ios": {
                    "version_added": "9"
                },
                "samsunginternet_android": "mirror",
                "webview_android": {
                    "version_added": "37"
                },
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "Performance"
        }
    ],
    "dom-performancemark-constructor": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/PerformanceMark.json",
            "name": "PerformanceMark",
            "slug": "API/PerformanceMark/PerformanceMark",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMark/PerformanceMark",
            "summary": "The PerformanceMark() constructor creates a timestamp with the given name.",
            "support": {
                "chrome": {
                    "version_added": "76"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": "mirror",
                "firefox": {
                    "version_added": "101"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "nodejs": {
                    "version_added": "16.0.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "14.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": {
                    "version_added": "79"
                },
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "PerformanceMark: PerformanceMark() constructor"
        }
    ],
    "dom-performancemark-detail": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/PerformanceMark.json",
            "name": "detail",
            "slug": "API/PerformanceMark/detail",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMark/detail",
            "summary": "The read-only detail property returns arbitrary metadata that was included in the mark upon construction (either when using performance.mark() or the PerformanceMark() constructor).",
            "support": {
                "chrome": {
                    "version_added": "78"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": "mirror",
                "firefox": {
                    "version_added": "101"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "nodejs": {
                    "version_added": "16.0.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "14.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": {
                    "version_added": "79"
                },
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "PerformanceMark: detail property"
        }
    ],
    "performancemark": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/PerformanceMark.json",
            "name": "PerformanceMark",
            "slug": "API/PerformanceMark",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMark",
            "summary": "PerformanceMark is an interface for PerformanceEntry objects with an entryType of \"mark\".",
            "support": {
                "chrome": {
                    "version_added": "28"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "38"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10"
                },
                "nodejs": {
                    "version_added": "8.5.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": {
                    "version_added": "14"
                },
                "safari": {
                    "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "PerformanceMark"
        }
    ],
    "dom-performancemeasure-detail": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/PerformanceMeasure.json",
            "name": "detail",
            "slug": "API/PerformanceMeasure/detail",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMeasure/detail",
            "summary": "The read-only detail property returns arbitrary metadata that was included in the mark upon construction (when using performance.measure().",
            "support": {
                "chrome": {
                    "version_added": "78"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": "mirror",
                "firefox": {
                    "version_added": "103"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "nodejs": {
                    "version_added": "16.0.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "14.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "PerformanceMeasure: detail property"
        }
    ],
    "performancemeasure": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "api/PerformanceMeasure.json",
            "name": "PerformanceMeasure",
            "slug": "API/PerformanceMeasure",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMeasure",
            "summary": "PerformanceMeasure is an abstract interface for PerformanceEntry objects with an entryType of \"measure\". Entries of this type are created by calling performance.measure() to add a named DOMHighResTimeStamp (the measure) between two marks to the browser's performance timeline.",
            "support": {
                "chrome": {
                    "version_added": "25"
                },
                "chrome_android": "mirror",
                "deno": {
                    "version_added": "1.2"
                },
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "38"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10"
                },
                "nodejs": {
                    "version_added": "8.5.0"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "33"
                },
                "opera_android": {
                    "version_added": "33"
                },
                "safari": {
                    "version_added": "11"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "PerformanceMeasure"
        }
    ]
}