ObjectObjects in JavaScript are collections of key-value pairs.javascriptJavaScriptwidely2015-07-292018-01-29https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objectshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Objectjavascript.builtins.Objectjavascript.builtins.Object.Objectjavascript.builtins.Object.assignjavascript.builtins.Object.constructorjavascript.builtins.Object.createjavascript.builtins.Object.definePropertiesjavascript.builtins.Object.definePropertyjavascript.builtins.Object.entriesjavascript.builtins.Object.freezejavascript.builtins.Object.fromEntriesjavascript.builtins.Object.getOwnPropertyDescriptorjavascript.builtins.Object.getOwnPropertyDescriptorsjavascript.builtins.Object.getOwnPropertyNamesjavascript.builtins.Object.getOwnPropertySymbolsjavascript.builtins.Object.getPrototypeOfjavascript.builtins.Object.hasOwnPropertyjavascript.builtins.Object.isjavascript.builtins.Object.isExtensiblejavascript.builtins.Object.isFrozenjavascript.builtins.Object.isPrototypeOfjavascript.builtins.Object.isSealedjavascript.builtins.Object.keysjavascript.builtins.Object.preventExtensionsjavascript.builtins.Object.preventExtensions.ES2015_behaviorjavascript.builtins.Object.propertyIsEnumerablejavascript.builtins.Object.sealjavascript.builtins.Object.setPrototypeOfjavascript.builtins.Object.toStringjavascript.builtins.Object.valueOfjavascript.builtins.Object.valuesjavascript.grammar.shorthand_object_literalsjavascript.operators.object_initializerjavascript.operators.object_initializer.computed_property_namesjavascript.operators.object_initializer.shorthand_method_namesjavascript.operators.object_initializer.shorthand_property_namesjavascript.operators.object_initializer.spread_propertiesjavascript.operators.optional_chaininghttps://nowyoucanuse.com/features--object-object.html