{
"dom-performance-getentries": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/Performance.json",
"name": "getEntries",
"slug": "API/Performance/getEntries",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/getEntries",
"summary": "The getEntries() method returns an array of all PerformanceEntry objects currently present in the performance timeline.",
"support": {
"chrome": [
{
"version_added": "28"
},
{
"prefix": "webkit",
"version_added": "25",
"version_removed": "36"
}
],
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"firefox_android": "mirror",
"ie": {
"version_added": "10"
},
"nodejs": {
"version_added": "16.7.0"
},
"oculus": "mirror",
"opera": {
"version_added": false
},
"opera_android": {
"version_added": false
},
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": {
"version_added": "4.4"
},
"edge_blink": [
{
"version_added": "79"
},
{
"prefix": "webkit",
"version_added": false,
"version_removed": "36"
}
]
},
"title": "Performance: getEntries() method"
}
],
"dom-performance-getentriesbyname": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/Performance.json",
"name": "getEntriesByName",
"slug": "API/Performance/getEntriesByName",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/getEntriesByName",
"summary": "The getEntriesByName() method returns an array of PerformanceEntry objects currently present in the performance timeline with the given name and type.",
"support": {
"chrome": [
{
"version_added": "28"
},
{
"prefix": "webkit",
"version_added": "25",
"version_removed": "36"
}
],
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"firefox_android": "mirror",
"ie": {
"version_added": "10"
},
"nodejs": {
"version_added": "16.7.0"
},
"oculus": "mirror",
"opera": {
"version_added": false
},
"opera_android": {
"version_added": false
},
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": {
"version_added": "4.4"
},
"edge_blink": [
{
"version_added": "79"
},
{
"prefix": "webkit",
"version_added": false,
"version_removed": "36"
}
]
},
"title": "Performance: getEntriesByName() method"
}
],
"dom-performance-getentriesbytype": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/Performance.json",
"name": "getEntriesByType",
"slug": "API/Performance/getEntriesByType",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/Performance/getEntriesByType",
"summary": "The getEntriesByType() method returns an array of PerformanceEntry objects currently present in the performance timeline for a given type.",
"support": {
"chrome": [
{
"version_added": "28"
},
{
"prefix": "webkit",
"version_added": "25",
"version_removed": "36"
}
],
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"firefox_android": "mirror",
"ie": {
"version_added": "10"
},
"nodejs": {
"version_added": "16.7.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": {
"version_added": "4.4"
},
"edge_blink": [
{
"version_added": "79"
},
{
"prefix": "webkit",
"version_added": false,
"version_removed": "36"
}
]
},
"title": "Performance: getEntriesByType() method"
}
],
"extensions-to-the-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 perf_hooks 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-performanceentry-duration": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceEntry.json",
"name": "duration",
"slug": "API/PerformanceEntry/duration",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry/duration",
"summary": "The read-only duration property returns a timestamp that is the duration of the performance entry. The meaning of this property depends on the value of this entry's entryType.",
"support": {
"chrome": {
"version_added": "28"
},
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"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": "PerformanceEntry: duration property"
}
],
"dom-performanceentry-entrytype": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceEntry.json",
"name": "entryType",
"slug": "API/PerformanceEntry/entryType",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry/entryType",
"summary": "The read-only entryType property returns a string representing the type of performance metric that this entry represents.",
"support": {
"chrome": {
"version_added": "28"
},
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"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": "PerformanceEntry: entryType property"
}
],
"dom-performanceentry-name": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceEntry.json",
"name": "name",
"slug": "API/PerformanceEntry/name",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry/name",
"summary": "The read-only name property of the PerformanceEntry interface is a string representing the name for a performance entry. It acts as an identifier, but it does not have to be unique. The value depends on the subclass.",
"support": {
"chrome": {
"version_added": "28"
},
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"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": "PerformanceEntry: name property"
}
],
"dom-performanceentry-starttime": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceEntry.json",
"name": "startTime",
"slug": "API/PerformanceEntry/startTime",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry/startTime",
"summary": "The read-only startTime property returns the first timestamp recorded for this performance entry. The meaning of this property depends on the value of this entry's entryType.",
"support": {
"chrome": {
"version_added": "28"
},
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"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": "PerformanceEntry: startTime property"
}
],
"dom-performanceentry-tojson": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceEntry.json",
"name": "toJSON",
"slug": "API/PerformanceEntry/toJSON",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry/toJSON",
"summary": "The toJSON() method is a serializer; it returns a JSON representation of the PerformanceEntry object.",
"support": {
"chrome": {
"version_added": "45"
},
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "16"
},
"firefox": {
"version_added": "35"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceEntry: toJSON() method"
}
],
"dom-performanceentry": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceEntry.json",
"name": "PerformanceEntry",
"slug": "API/PerformanceEntry",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry",
"summary": "The PerformanceEntry object encapsulates a single performance metric that is part of the browser's performance timeline.",
"support": {
"chrome": [
{
"version_added": "46"
},
{
"version_added": "25",
"prefix": "webkit"
}
],
"chrome_android": "mirror",
"deno": {
"version_added": "1.2"
},
"edge": {
"version_added": "12"
},
"firefox": {
"version_added": "35"
},
"firefox_android": "mirror",
"ie": {
"version_added": "10"
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": [
{
"version_added": "79"
},
{
"version_added": "79",
"prefix": "webkit"
}
]
},
"title": "PerformanceEntry"
}
],
"dom-performanceobserver-constructor": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserver.json",
"name": "PerformanceObserver",
"slug": "API/PerformanceObserver/PerformanceObserver",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/PerformanceObserver",
"summary": "The PerformanceObserver() constructor creates a new PerformanceObserver object with the given observer callback. The observer callback is invoked when performance entry events are recorded for the entry types that have been registered, via the observe() method.",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserver: PerformanceObserver() constructor"
}
],
"dom-performanceobserver-disconnect": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserver.json",
"name": "disconnect",
"slug": "API/PerformanceObserver/disconnect",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/disconnect",
"summary": "The disconnect() method of the PerformanceObserver interface is used to stop the performance observer from receiving any performance entry events.",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0",
"notes": "Exported from the perf_hooks module",
"partial_implementation": true
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserver: disconnect() method"
}
],
"dom-performanceobserver-observe": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserver.json",
"name": "observe",
"slug": "API/PerformanceObserver/observe",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/observe",
"summary": "The observe() method of the PerformanceObserver interface is used to specify the set of performance entry types to observe.",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserver: observe() method"
}
],
"supportedentrytypes-attribute": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserver.json",
"name": "supportedEntryTypes_static",
"slug": "API/PerformanceObserver/supportedEntryTypes_static",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/supportedEntryTypes_static",
"summary": "The static supportedEntryTypes read-only property of the PerformanceObserver interface returns an array of the entryType values supported by the user agent.",
"support": {
"chrome": {
"version_added": "73"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "68"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "13"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserver: supportedEntryTypes static property"
}
],
"dom-performanceobserver-takerecords": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserver.json",
"name": "takeRecords",
"slug": "API/PerformanceObserver/takeRecords",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/takeRecords",
"summary": "The takeRecords() method of the PerformanceObserver interface returns the current list of performance entries stored in the performance observer, emptying it out.",
"support": {
"chrome": {
"version_added": "65"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "60"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": false
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "15"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserver: takeRecords() method"
}
],
"dom-performanceobserver": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserver.json",
"name": "PerformanceObserver",
"slug": "API/PerformanceObserver",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver",
"summary": "The PerformanceObserver interface is used to observe performance measurement events and be notified of new performance entries as they are recorded in the browser's performance timeline.",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0",
"notes": "Exported from the perf_hooks module",
"partial_implementation": true
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserver"
}
],
"dom-performanceobserverentrylist-getentries": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserverEntryList.json",
"name": "getEntries",
"slug": "API/PerformanceObserverEntryList/getEntries",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserverEntryList/getEntries",
"summary": "The getEntries() method of the PerformanceObserverEntryList interface returns a list of explicitly observed performance entry objects. The list's members are determined by the set of entry types specified in the call to the observe() method. The list is available in the observer's callback function (as the first parameter in the callback).",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserverEntryList: getEntries() method"
}
],
"dom-performanceobserverentrylist-getentriesbyname": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserverEntryList.json",
"name": "getEntriesByName",
"slug": "API/PerformanceObserverEntryList/getEntriesByName",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserverEntryList/getEntriesByName",
"summary": "The getEntriesByName() method of the PerformanceObserverEntryList interface returns a list of explicitly observed performance entry objects for a given name and entry type. The list's members are determined by the set of entry types specified in the call to the observe() method. The list is available in the observer's callback function (as the first parameter in the callback).",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserverEntryList: getEntriesByName() method"
}
],
"dom-performanceobserverentrylist-getentriesbytype": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserverEntryList.json",
"name": "getEntriesByType",
"slug": "API/PerformanceObserverEntryList/getEntriesByType",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserverEntryList/getEntriesByType",
"summary": "The getEntriesByType() method of the PerformanceObserverEntryList returns a list of explicitly observed performance entry objects for a given performance entry type. The list's members are determined by the set of entry types specified in the call to the observe() method. The list is available in the observer's callback function (as the first parameter in the callback).",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserverEntryList: getEntriesByType() method"
}
],
"performanceobserverentrylist-interface": [
{
"engines": [
"blink",
"gecko",
"webkit"
],
"filename": "api/PerformanceObserverEntryList.json",
"name": "PerformanceObserverEntryList",
"slug": "API/PerformanceObserverEntryList",
"mdn_url": "https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserverEntryList",
"summary": "The PerformanceObserverEntryList interface is a list of performance events that were explicitly observed via the observe() method.",
"support": {
"chrome": {
"version_added": "52"
},
"chrome_android": "mirror",
"edge": "mirror",
"firefox": {
"version_added": "57"
},
"firefox_android": "mirror",
"ie": {
"version_added": false
},
"nodejs": {
"version_added": "8.5.0"
},
"oculus": "mirror",
"opera": "mirror",
"opera_android": "mirror",
"safari": {
"version_added": "11"
},
"safari_ios": "mirror",
"samsunginternet_android": "mirror",
"webview_android": "mirror",
"edge_blink": {
"version_added": "79"
}
},
"title": "PerformanceObserverEntryList"
}
]
}