{ "javascript": { "builtins": { "Object": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object", "spec_url": "https://tc39.github.io/ecma262/#sec-object-objects", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } }, "prototype": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/prototype", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "count": { "__compat": { "description": "__count__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/count", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "noSuchMethod": { "__compat": { "description": "__noSuchMethod__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/noSuchMethod", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "1", "version_removed": "43" }, "firefox_android": { "version_added": "4", "version_removed": "43" }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "parent": { "__compat": { "description": "__parent__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/parent", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "proto": { "__compat": { "description": "__proto__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/proto", "spec_url": "https://tc39.github.io/ecma262/#sec-additional-properties-of-the-object.prototype-object", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "11" }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": true } } }, "constructor": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.constructor", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "assign": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign", "spec_url": "https://tc39.github.io/ecma262/#sec-object.assign", "support": { "chrome": { "version_added": "45" }, "chrome_android": { "version_added": "45" }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "34" }, "firefox_android": { "version_added": "34" }, "ie": { "version_added": false }, "nodejs": { "version_added": "4.0.0" }, "opera": { "version_added": "32" }, "opera_android": { "version_added": false }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": "5.0" }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "create": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/create", "spec_url": "https://tc39.github.io/ecma262/#sec-object.create", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "11.6" }, "opera_android": { "version_added": "11.5" }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "defineProperties": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperties", "spec_url": "https://tc39.github.io/ecma262/#sec-object.defineproperties", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "11.6" }, "opera_android": { "version_added": "11.5" }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "defineProperty": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty", "spec_url": "https://tc39.github.io/ecma262/#sec-object.defineproperty", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9", "notes": "Also supported in Internet Explorer 8, but only on DOM objects and with some non-standard behaviors." }, "nodejs": { "version_added": true }, "opera": { "version_added": "11.6" }, "opera_android": { "version_added": "11.5" }, "safari": { "version_added": "5.1", "notes": "Also supported in Safari 5, but not on DOM objects." }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "entries": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries", "spec_url": "https://tc39.github.io/ecma262/#sec-object.entries", "support": { "chrome": { "version_added": "54" }, "chrome_android": { "version_added": "54" }, "edge": { "version_added": "14" }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "47" }, "firefox_android": { "version_added": "47" }, "ie": { "version_added": false }, "nodejs": [ { "version_added": "7.0.0" }, { "version_added": "6.5.0", "flags": [ { "type": "runtime_flag", "name": "--harmony" } ] } ], "opera": { "version_added": "41" }, "opera_android": { "version_added": "41" }, "safari": { "version_added": "10.1" }, "safari_ios": { "version_added": "10.1" }, "samsunginternet_android": { "version_added": "6.0" }, "webview_android": { "version_added": "54" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "freeze": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze", "spec_url": "https://tc39.github.io/ecma262/#sec-object.freeze", "support": { "chrome": { "version_added": "6" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5.1" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "fromEntries": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries", "spec_url": "https://tc39.github.io/proposal-object-from-entries/#sec-object.fromentries", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "63" }, "firefox_android": { "version_added": "63" }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "getNotifier": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/getNotifier", "support": { "chrome": { "version_added": "36", "version_removed": "52" }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "getOwnPropertyDescriptor": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor", "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "8" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "getOwnPropertyDescriptors": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptors", "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors", "support": { "chrome": { "version_added": "54" }, "chrome_android": { "version_added": "54" }, "edge": { "version_added": "15" }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "50" }, "firefox_android": { "version_added": "50" }, "ie": { "version_added": false }, "nodejs": [ { "version_added": "7.0.0" }, { "version_added": "6.5.0", "flags": [ { "type": "runtime_flag", "name": "--harmony" } ] } ], "opera": { "version_added": "41" }, "opera_android": { "version_added": null }, "safari": { "version_added": "10" }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": "6.0" }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "getOwnPropertyNames": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyNames", "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertynames", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "getOwnPropertySymbols": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertySymbols", "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols", "support": { "chrome": { "version_added": "38" }, "chrome_android": { "version_added": "38" }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "36" }, "firefox_android": { "version_added": "36" }, "ie": { "version_added": false }, "nodejs": { "version_added": "0.12" }, "opera": { "version_added": "25" }, "opera_android": { "version_added": "25" }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9" }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": "38" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "getPrototypeOf": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/getPrototypeOf", "spec_url": "https://tc39.github.io/ecma262/#sec-object.getprototypeof", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "3.5" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12.1" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "is": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/is", "spec_url": "https://tc39.github.io/ecma262/#sec-object.is", "support": { "chrome": { "version_added": "30" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "22" }, "firefox_android": { "version_added": "22" }, "ie": { "version_added": false }, "nodejs": { "version_added": "0.10" }, "opera": { "version_added": true }, "opera_android": { "version_added": true }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9" }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "isExtensible": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isExtensible", "spec_url": "https://tc39.github.io/ecma262/#sec-object.isextensible", "support": { "chrome": { "version_added": "6" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5.1" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "isFrozen": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isFrozen", "spec_url": "https://tc39.github.io/ecma262/#sec-object.isfrozen", "support": { "chrome": { "version_added": "6" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5.1" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "isSealed": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isSealed", "spec_url": "https://tc39.github.io/ecma262/#sec-object.issealed", "support": { "chrome": { "version_added": "6" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5.1" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "keys": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/keys", "spec_url": "https://tc39.github.io/ecma262/#sec-object.keys", "support": { "chrome": { "version_added": "5" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "observe": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/observe", "support": { "chrome": { "version_added": "36", "version_removed": "52" }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "preventExtensions": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/preventExtensions", "spec_url": "https://tc39.github.io/ecma262/#sec-object.preventextensions", "support": { "chrome": { "version_added": "6" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5.1" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } }, "ES2015_behavior": { "__compat": { "description": "ES2015 behavior for non-object argument", "support": { "chrome": { "version_added": "44" }, "chrome_android": { "version_added": true }, "edge": { "version_added": null }, "edge_mobile": { "version_added": null }, "firefox": { "version_added": "35" }, "firefox_android": { "version_added": "35" }, "ie": { "version_added": "11" }, "nodejs": { "version_added": true }, "opera": { "version_added": "31" }, "opera_android": { "version_added": true }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": "9" }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } } }, "defineGetter": { "__compat": { "description": "__defineGetter__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.__defineGetter__", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1", "notes": "Starting with Firefox 48, this method can no longer be called at the global scope without any object. A TypeError will be thrown otherwise. Previously, the global object was used in these cases automatically, but this is no longer the case." }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "11" }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": true } } }, "defineSetter": { "__compat": { "description": "__defineSetter__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.__defineSetter__", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1", "notes": "Starting with Firefox 48, this method can no longer be called at the global scope without any object. A TypeError will be thrown otherwise. Previously, the global object was used in these cases automatically, but this is no longer the case." }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "11" }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": true } } }, "lookupGetter": { "__compat": { "description": "__lookupGetter__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.__lookupGetter__", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "11" }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": true } } }, "lookupSetter": { "__compat": { "description": "__lookupSetter__", "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.__lookupSetter__", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "11" }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": true } } }, "eval": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/eval", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "hasOwnProperty": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.hasownproperty", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "isPrototypeOf": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.isprototypeof", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "propertyIsEnumerable": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "toLocaleString": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.tolocalestring", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "toSource": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/toSource", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "toString": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/toString", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.tostring", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "unwatch": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/unwatch", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "1", "version_removed": "58" }, "firefox_android": { "version_added": "4", "version_removed": "58" }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "valueOf": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf", "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.valueof", "support": { "chrome": { "version_added": true }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "1" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": true }, "nodejs": { "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 }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "watch": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/watch", "support": { "chrome": { "version_added": false }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": "1", "version_removed": "58" }, "firefox_android": { "version_added": "4", "version_removed": "58" }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "seal": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/seal", "spec_url": "https://tc39.github.io/ecma262/#sec-object.seal", "support": { "chrome": { "version_added": "6" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "4" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "9" }, "nodejs": { "version_added": true }, "opera": { "version_added": "12" }, "opera_android": { "version_added": true }, "safari": { "version_added": "5.1" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "setPrototypeOf": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf", "spec_url": "https://tc39.github.io/ecma262/#sec-object.setprototypeof", "support": { "chrome": { "version_added": "34" }, "chrome_android": { "version_added": true }, "edge": { "version_added": true }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "31" }, "firefox_android": { "version_added": "31" }, "ie": { "version_added": "11" }, "nodejs": { "version_added": "0.12" }, "opera": { "version_added": true }, "opera_android": { "version_added": true }, "safari": { "version_added": "9" }, "safari_ios": { "version_added": true }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": true } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "unobserve": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/unobserve", "support": { "chrome": { "version_added": "36", "version_removed": "52" }, "chrome_android": { "version_added": false }, "edge": { "version_added": false }, "edge_mobile": { "version_added": false }, "firefox": { "version_added": false }, "firefox_android": { "version_added": false }, "ie": { "version_added": false }, "nodejs": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": false }, "webview_android": { "version_added": false } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "values": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/values", "spec_url": "https://tc39.github.io/ecma262/#sec-object.values", "support": { "chrome": { "version_added": "54" }, "chrome_android": { "version_added": "54" }, "edge": { "version_added": "14" }, "edge_mobile": { "version_added": true }, "firefox": { "version_added": "47" }, "firefox_android": { "version_added": "47" }, "ie": { "version_added": false }, "nodejs": [ { "version_added": "7.0.0" }, { "version_added": "6.5.0", "flags": [ { "type": "runtime_flag", "name": "--harmony" } ] } ], "opera": { "version_added": "41" }, "opera_android": { "version_added": "41" }, "safari": { "version_added": "10.1" }, "safari_ios": { "version_added": "10.3" }, "samsunginternet_android": { "version_added": "6.0" }, "webview_android": { "version_added": "54" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } } } } } }