When writing code for the Web using JavaScript, there are a great many APIs available. Below is a list of all the interfaces (that is, types of objects) that you may be able to use while developing your Web app or site. For a list of the APIs that contain each of these interfaces, see Web API reference.
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AbstractWorkerAnalyserNodeAnimationEventAppAppsArrayBufferArrayBufferViewAttrAudioBufferAudioBufferSourceNodeAudioContextAudioDestinationNodeAudioListenerAudioNodeAudioParamAudioProcessingEvent
CallEventCameraCapabilitiesCameraControlCameraManagerCanvasGradientCanvasImageSourceCanvasPatternCanvasPixelArrayCanvasRenderingContext2DCaretPositionCDATASectionChannelMergerNodeChannelSplitterNodeCharacterDataChildNodeChromeWorkerClipboardEventCloseEventCommentCompositionEventConnectionConsoleContactManagerConvolverNodeCoordinatesCSSCSSConditionRuleCSSGroupingRuleCSSKeyframeRuleCSSKeyframesRuleCSSMediaRuleCSSNamespaceRuleCSSPageRuleCSSRuleCSSRuleListCSSStyleDeclarationCSSStyleRuleCSSStyleSheetCSSSupportsRuleCustomEvent
DataTransferDataViewDedicatedWorkerGlobalScopeDelayNodeDeviceAccelerationDeviceLightEventDeviceMotionEventDeviceOrientationEventDeviceProximityEventDeviceRotationRateDeviceStorageDeviceStorageChangeEventDirectoryEntryDirectoryEntrySyncDirectoryReaderDirectoryReaderSyncDocumentDocumentFragmentDocumentTouchDocumentTypeDOMConfigurationDOMCursorDOMErrorDOMErrorHandlerDOMExceptionDOMHighResTimeStampDOMImplementationDOMImplementationListDOMImplementationRegistryDOMImplementationSourceDOMLocatorDOMObjectDOMParserDOMRequestDOMStringDOMStringListDOMStringMapDOMTimeStampDOMTokenListDOMUserDataDynamicsCompressorNode
ElementElementTraversalEntityEntityReferenceEntryEntrySyncErrorEventEventEventListenerEventSourceEventTargetExtensions
FileFileEntryFileEntrySyncFileErrorFileExceptionFileHandleFileListFileReaderFileReaderSyncFileRequestFileSystemFileSystemSyncFloat32ArrayFloat64ArrayFMRadioFocusEventFormData
HistoryHTMLAnchorElementHTMLAreaElementHTMLAudioElementHTMLBaseElementHTMLBaseFontElementHTMLBodyElementHTMLBRElementHTMLButtonElementHTMLCanvasElementHTMLCollectionHTMLDataElementHTMLDataListElementHTMLDivElementHTMLDListElementHTMLDocumentHTMLElementHTMLEmbedElementHTMLFieldSetElementHTMLFormControlsCollectionHTMLFormElementHTMLHeadElementHTMLHeadingElementHTMLHRElementHTMLHtmlElementHTMLIFrameElementHTMLImageElementHTMLInputElementHTMLIsIndexElementHTMLKeygenElementHTMLLabelElementHTMLLegendElementHTMLLIElementHTMLLinkElementHTMLMapElementHTMLMediaElementHTMLMetaElementHTMLMeterElementHTMLModElementHTMLObjectElementHTMLOListElementHTMLOptGroupElementHTMLOptionElementHTMLOptionsCollectionHTMLOutputElementHTMLParagraphElementHTMLParamElementHTMLPreElementHTMLProgressElementHTMLQuoteElementHTMLScriptElementHTMLSelectElementHTMLSourceElementHTMLSpanElementHTMLStyleElementHTMLTableCaptionElementHTMLTableCellElementHTMLTableColElementHTMLTableDataCellElementHTMLTableElementHTMLTableHeaderCellElementHTMLTableRowElementHTMLTableSectionElementHTMLTextAreaElementHTMLTimeElementHTMLTitleElementHTMLTrackElementHTMLUListElementHTMLUnknownElementHTMLVideoElement
IDBCursorIDBCursorSyncIDBCursorWithValueIDBDatabaseIDBDatabaseExceptionIDBDatabaseSyncIDBEnvironmentIDBEnvironmentSyncIDBFactoryIDBFactorySyncIDBIndexIDBIndexSyncIDBKeyRangeIDBObjectStoreIDBObjectStoreSyncIDBOpenDBRequestIDBRequestIDBTransactionIDBTransactionSyncIDBVersionChangeEventIDBVersionChangeRequestImageDataInt16ArrayInt32ArrayInt8Array
MediaQueryListMediaQueryListListenerMediaSourceMediaStreamMediaStreamTrackMessageEventMouseEventMouseScrollEventMouseWheelEventMozActivityMozActivityOptionsMozActivityRequestHandlerMozAlarmsManagerMozContactMozContactChangeEventMozIccManagerMozMmsEventMozMmsMessageMozMobileCellInfoMozMobileCFInfoMozMobileConnectionMozMobileConnectionInfoMozMobileICCInfoMozMobileMessageManagerMozMobileMessageThreadMozMobileNetworkInfoMozNetworkStatsMozNetworkStatsDataMozNetworkStatsManagerMozSettingsEventMozSmsEventMozSmsFilterMozSmsManagerMozSmsMessageMozSmsSegmentInfoMozTimeManagerMozWifiConnectionInfoEventMozWifiStatusChangeEventMutationObserver
NamedNodeMapNameListNavigatorNavigatorGeolocationNavigatorIDNavigatorLanguageNavigatorOnLineNavigatorPluginsNetworkInformationNodeNodeFilterNodeIteratorNodeListNotationNotificationNotifyAudioAvailableEvent
PannerNodeParentNodePerformancePerformanceNavigationPerformanceTimingPermissionSettingsPluginPluginArrayPositionPositionErrorPositionOptionsPowerManagerProcessingInstructionProgressEventPromisePromiseResolverPushManager
ScriptProcessorNodeSelectionSettingsLockSettingsManagerSharedWorkerStorageEventStyleSheetStyleSheetListSVGAElementSVGAngleSVGAnimateColorElementSVGAnimatedAngleSVGAnimatedBooleanSVGAnimatedEnumerationSVGAnimatedIntegerSVGAnimatedLengthSVGAnimatedLengthListSVGAnimatedNumberSVGAnimatedNumberListSVGAnimatedPointsSVGAnimatedPreserveAspectRatioSVGAnimatedRectSVGAnimatedStringSVGAnimatedTransformListSVGAnimateElementSVGAnimateMotionElementSVGAnimateTransformElementSVGAnimationElementSVGCircleElementSVGClipPathElementSVGCursorElementSVGDefsElementSVGDescElementSVGElementSVGEllipseElementSVGFilterElementSVGFontElementSVGFontFaceElementSVGFontFaceFormatElementSVGFontFaceNameElementSVGFontFaceSrcElementSVGFontFaceUriElementSVGForeignObjectElementSVGGElementSVGGlyphElementSVGGradientElementSVGHKernElementSVGImageElementSVGLengthSVGLengthListSVGLinearGradientElementSVGLineElementSVGMaskElementSVGMatrixSVGMissingGlyphElementSVGMPathElementSVGNumberSVGNumberListSVGPathElementSVGPatternElementSVGPointSVGPolygonElementSVGPolylineElementSVGPreserveAspectRatioSVGRadialGradientElementSVGRectSVGRectElementSVGScriptElementSVGSetElementSVGStopElementSVGStringListSVGStylableSVGStyleElementSVGSVGElementSVGSwitchElementSVGSymbolElementSVGTestsSVGTextElementSVGTextPositioningElementSVGTitleElementSVGTransformSVGTransformableSVGTransformListSVGTRefElementSVGTSpanElementSVGUseElementSVGViewElementSVGVKernElement
TCPServerSocketTCPSocketTelephonyTelephonyCallTextTextDecoderTextEncoderTextMetricsTimeRangesTouchTouchEventTouchListTransferableTransitionEventTreeWalkerTypeInfo
UIEventUint16ArrayUint32ArrayUint8ArrayUint8ClampedArrayURLURLUtilsURLUtilsReadOnlyUserDataHandlerUserProximityEvent
WaveShaperNodeWeb API ReferenceWebGLRenderingContextWebSocketWheelEventWifiManagerWindowWorkerWorkerLocationWorkerNavigator