When writing code for the Web with 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.
ANGLE_instanced_arraysAbortControllerAbortSignalAbstractWorkerAmbientLightSensorAmbientLightSensorReadingAnalyserNodeAnimationAnimationEffectReadOnlyAnimationEffectTimingAnimationEffectTimingPropertiesAnimationEffectTimingReadOnlyAnimationEventAnimationPlaybackEventAnimationTimelineArrayBufferViewAttrAudioBufferAudioBufferSourceNodeAudioContextAudioDestinationNodeAudioListenerAudioNodeAudioNodeOptionsAudioParamAudioProcessingEventAudioScheduledSourceNode
BaseAudioContextBasicCardRequestBasicCardResponseBatteryManagerBeforeInstallPromptEventBeforeUnloadEventBiquadFilterNodeBlobBlobBuilderBlobEventBluetoothBluetoothAdvertisingDataBluetoothCharacteristicPropertiesBluetoothRemoteGATTCharacteristicBluetoothRemoteGATTDescriptorBluetoothRemoteGATTServerBluetoothRemoteGATTServiceBluetoothStatusChangedEventBodyBroadcastChannelBudgetServiceBudgetStateBufferSourceByteLengthQueuingStrategyByteString
CDATASectionCSSCSSConditionRuleCSSCounterStyleRuleCSSGroupingRuleCSSKeyframeRuleCSSKeyframesRuleCSSMatrixCSSMediaRuleCSSNamespaceRuleCSSOMStringCSSPageRuleCSSPrimitiveValueCSSRuleCSSRuleListCSSStyleDeclarationCSSStyleRuleCSSStyleSheetCSSSupportsRuleCSSValueCSSValueListCacheCacheStorageCanvasCaptureMediaStreamCanvasGradientCanvasImageSourceCanvasPatternCanvasRenderingContext2DCaretPositionChannelMergerNodeChannelSplitterNodeCharacterDataChildNodeChromeWorkerClientClientsClipboardEventCloseEventCommentCompositionEventConsoleConstantSourceNodeConstrainBooleanConstrainDOMStringConstrainDoubleConstrainLongConvolverNodeCoordinatesCountQueuingStrategyCredentialCredentialsContainerCryptoCryptoKeyCustomElementRegistryCustomEvent
DOMConfigurationDOMErrorDOMErrorHandlerDOMExceptionDOMHighResTimeStampDOMImplementationDOMImplementationListDOMImplementationRegistryDOMImplementationSourceDOMLocatorDOMMatrixDOMMatrixReadOnlyDOMObjectDOMParserDOMPointDOMPointReadOnlyDOMRectDOMRectReadOnlyDOMStringDOMStringListDOMStringMapDOMTimeStampDOMTokenListDOMUserDataDataTransferDataTransferItemDataTransferItemListDedicatedWorkerGlobalScopeDelayNodeDeviceAccelerationDeviceLightEventDeviceMotionEventDeviceOrientationEventDeviceProximityEventDeviceRotationRateDirectoryEntrySyncDirectoryReaderSyncDocumentDocumentFragmentDocumentOrShadowRootDocumentTimelineDocumentTouchDocumentTypeDoubleRangeDragEventDynamicsCompressorNode
EXT_blend_minmaxEXT_color_buffer_floatEXT_color_buffer_half_floatEXT_disjoint_timer_queryEXT_frag_depthEXT_sRGBEXT_shader_texture_lodEXT_texture_filter_anisotropicElementElementTraversalEntityEntityReferenceEntrySyncErrorEventEventEventListenerEventSourceEventTargetExtendableEventExtendableMessageEvent
FederatedCredentialFetchEventFileFileEntrySyncFileErrorFileExceptionFileListFileReaderFileReaderSyncFileRequestFileSystemFileSystemDirectoryEntryFileSystemDirectoryReaderFileSystemEntryFileSystemFileEntryFileSystemFlagsFileSystemSyncFocusEventFontFaceFontFaceSetFontFaceSetLoadEventFormData
GainNodeGamepadGamepadButtonGamepadEventGamepadHapticActuatorGamepadPoseGeolocationGestureEventGlobalEventHandlersGlobalFetch
HMDVRDeviceHTMLAnchorElementHTMLAreaElementHTMLAudioElementHTMLBRElementHTMLBaseElementHTMLBaseFontElementHTMLBodyElementHTMLButtonElementHTMLCanvasElementHTMLCollectionHTMLContentElementHTMLDListElementHTMLDataElementHTMLDataListElementHTMLDetailsElementHTMLDialogElementHTMLDivElementHTMLDocumentHTMLElementHTMLEmbedElementHTMLFieldSetElementHTMLFontElementHTMLFormControlsCollectionHTMLFormElementHTMLFrameSetElementHTMLHRElementHTMLHeadElementHTMLHeadingElementHTMLHtmlElementHTMLHyperlinkElementUtilsHTMLIFrameElementHTMLImageElementHTMLInputElementHTMLIsIndexElementHTMLKeygenElementHTMLLIElementHTMLLabelElementHTMLLegendElementHTMLLinkElementHTMLMapElementHTMLMediaElementHTMLMetaElementHTMLMeterElementHTMLModElementHTMLOListElementHTMLObjectElementHTMLOptGroupElementHTMLOptionElementHTMLOptionsCollectionHTMLOutputElementHTMLParagraphElementHTMLParamElementHTMLPictureElementHTMLPreElementHTMLProgressElementHTMLQuoteElementHTMLScriptElementHTMLSelectElementHTMLShadowElementHTMLSlotElementHTMLSourceElementHTMLSpanElementHTMLStyleElementHTMLTableCaptionElementHTMLTableCellElementHTMLTableColElementHTMLTableDataCellElementHTMLTableElementHTMLTableHeaderCellElementHTMLTableRowElementHTMLTableSectionElementHTMLTemplateElementHTMLTextAreaElementHTMLTimeElementHTMLTitleElementHTMLTrackElementHTMLUListElementHTMLUnknownElementHTMLVideoElementHashChangeEventHeadersHistory
IDBCursorIDBCursorSyncIDBCursorWithValueIDBDatabaseIDBDatabaseExceptionIDBDatabaseSyncIDBEnvironmentIDBEnvironmentSyncIDBFactoryIDBFactorySyncIDBIndexIDBIndexSyncIDBKeyRangeIDBLocaleAwareKeyRangeIDBMutableFileIDBObjectStoreIDBObjectStoreSyncIDBOpenDBRequestIDBRequestIDBTransactionIDBTransactionSyncIDBVersionChangeEventIDBVersionChangeRequestIIRFilterNodeIdleDeadlineImageBitmapImageBitmapFactoriesImageBitmapRenderingContextImageCaptureImageDataIndexInputDeviceCapabilitiesInputEventInstallEventInstallEventInstallTriggerIntersectionObserverIntersectionObserverEntry
L10n.formatValueL10n.getL10n.language.codeL10n.language.directionL10n.onceL10n.readyL10n.readyStateL10n.setAttributesLinkStyleLocalFileSystemLocalFileSystemSyncLocalMediaStreamLocationLockedFileLongRange
MIDIAccessMIDIConnectionEventMIDIInputMIDIInputMapMIDIOutputMapMSGestureEventMediaDeviceInfoMediaDevicesMediaElementAudioSourceNodeMediaErrorMediaKeyMessageEventMediaKeySessionMediaKeyStatusMapMediaKeySystemAccessMediaKeySystemConfigurationMediaKeysMediaMetadataMediaQueryListMediaQueryListEventMediaQueryListListenerMediaRecorderMediaRecorderErrorEventMediaSessionMediaSettingsRangeMediaSourceMediaStreamMediaStreamAudioDestinationNodeMediaStreamAudioSourceNodeMediaStreamConstraintsMediaStreamEventMediaStreamTrackMediaStreamTrackEventMediaTrackConstraintsMediaTrackSettingsMediaTrackSupportedConstraintsMessageChannelMessageEventMessagePortMetadataMimeTypeMimeTypeArrayMouseEventMouseScrollEventMouseWheelEventMutationEventMutationObserverMutationRecord
NameListNamedNodeMapNavigationPreloadManagerNavigatorNavigatorConcurrentHardwareNavigatorGeolocationNavigatorIDNavigatorLanguageNavigatorOnLineNavigatorPluginsNavigatorStorageNetworkInformationNodeNodeFilterNodeIteratorNodeListNonDocumentTypeChildNodeNotationNotificationNotificationEventNotifyAudioAvailableEvent
OES_element_index_uintOES_standard_derivativesOES_texture_floatOES_texture_float_linearOES_texture_half_floatOES_texture_half_float_linearOES_vertex_array_objectOfflineAudioCompletionEventOfflineAudioContextOffscreenCanvasOscillatorNode
PageTransitionEventPannerNodeParentNodePasswordCredentialPath2DPaymentAddressPaymentRequestPaymentRequestUpdateEventPaymentResponsePerformancePerformanceEntryPerformanceFrameTimingPerformanceLongTaskTimingPerformanceMarkPerformanceMeasurePerformanceNavigationPerformanceNavigationTimingPerformanceObserverPerformanceObserverEntryListPerformancePaintTimingPerformanceResourceTimingPerformanceTimingPeriodicWavePermissionStatusPermissionsPhotoCapabilitiesPluginPluginArrayPointPointerEventPopStateEventPositionPositionErrorPositionOptionsPositionSensorVRDevicePresentationPresentationAvailabilityPresentationConnectionPresentationConnectionAvailableEventPresentationConnectionCloseEventPresentationConnectionClosedEventPresentationConnectionListPresentationReceiverPresentationRequestProcessingInstructionProgressEventPromiseRejectionEventPromiseResolverPushEventPushManagerPushMessageDataPushRegistrationManagerPushSubscription
RTCCertificateRTCConfigurationRTCDTMFSenderRTCDTMFToneChangeEventRTCDataChannelRTCDataChannelEventRTCIceCandidateRTCIceServerRTCIdentityAssertionRTCIdentityErrorEventRTCIdentityEventRTCPeerConnectionRTCPeerConnectionIceEventRTCRtpContributingSourceRTCRtpReceiverRTCRtpSenderRTCSctpTransportRTCSessionDescriptionRTCSessionDescriptionCallbackRTCStatsReportRadioNodeListRandomSourceRangeReadableByteStreamControllerReadableStreamReadableStreamBYOBReaderReadableStreamBYOBRequestReadableStreamDefaultControllerReadableStreamDefaultReaderRenderingContextRequestResponse
SVGAElementSVGAltGlyphDefElementSVGAltGlyphElementSVGAltGlyphItemElementSVGAngleSVGAnimateColorElementSVGAnimateElementSVGAnimateMotionElementSVGAnimateTransformElementSVGAnimatedAngleSVGAnimatedBooleanSVGAnimatedEnumerationSVGAnimatedIntegerSVGAnimatedLengthSVGAnimatedLengthListSVGAnimatedNumberSVGAnimatedNumberListSVGAnimatedPointsSVGAnimatedPreserveAspectRatioSVGAnimatedRectSVGAnimatedStringSVGAnimatedTransformListSVGAnimationElementSVGCircleElementSVGClipPathElementSVGColorProfileElementSVGComponentTransferFunctionElementSVGCursorElementSVGDefsElementSVGDescElementSVGElementSVGEllipseElementSVGEventSVGExternalResourcesRequiredSVGFEBlendElementSVGFEComponentTransferElementSVGFECompositeElementSVGFEConvolveMatrixElementSVGFEDiffuseLightingElementSVGFEDisplacementMapElementSVGFEDistantLightElementSVGFEDropShadowElementSVGFEFloodElementSVGFEFuncAElementSVGFEFuncBElementSVGFEFuncGElementSVGFEFuncRElementSVGFEGaussianBlurElementSVGFEImageElementSVGFEMergeElementSVGFEMergeNodeElementSVGFEMorphologyElementSVGFEOffsetElementSVGFEPointLightElementSVGFESpecularLightingElementSVGFESpotLightElementSVGFETileElementSVGFETurbulenceElementSVGFilterElementSVGFilterPrimitiveStandardAttributesSVGFontElementSVGFontFaceElementSVGFontFaceFormatElementSVGFontFaceNameElementSVGFontFaceSrcElementSVGFontFaceUriElementSVGForeignObjectElementSVGGElementSVGGeometryElementSVGGlyphElementSVGGlyphRefElementSVGGradientElementSVGGraphicsElementSVGHKernElementSVGImageElementSVGLengthSVGLengthListSVGLineElementSVGLinearGradientElementSVGMPathElementSVGMaskElementSVGMatrixSVGMeshElementSVGMetadataElementSVGMissingGlyphElementSVGNumberSVGNumberListSVGPathElementSVGPatternElementSVGPointSVGPolygonElementSVGPolylineElementSVGPreserveAspectRatioSVGRadialGradientElementSVGRectSVGRectElementSVGRenderingIntentSVGSVGElementSVGScriptElementSVGSetElementSVGSolidcolorElementSVGStopElementSVGStringListSVGStylableSVGStyleElementSVGSwitchElementSVGSymbolElementSVGTRefElementSVGTSpanElementSVGTestsSVGTextContentElementSVGTextElementSVGTextPathElementSVGTextPositioningElementSVGTitleElementSVGTransformSVGTransformListSVGTransformableSVGURIReferenceSVGUnitTypesSVGUseElementSVGVKernElementSVGViewElementSVGZoomAndPanScreenScreenOrientationScriptProcessorNodeSecurityPolicyViolationEventSelectionServiceWorkerServiceWorkerContainerServiceWorkerGlobalScopeServiceWorkerMessageEventServiceWorkerRegistrationServiceWorkerStateShadowRootSharedWorkerSharedWorkerGlobalScopeSourceBufferSourceBufferListSpeechGrammarSpeechGrammarListSpeechRecognitionSpeechRecognitionAlternativeSpeechRecognitionErrorSpeechRecognitionEventSpeechRecognitionResultSpeechRecognitionResultListSpeechSynthesisSpeechSynthesisErrorEventSpeechSynthesisEventSpeechSynthesisUtteranceSpeechSynthesisVoiceStaticRangeStereoPannerNodeStorageStorageEstimateStorageEventStorageManagerStorageQuotaStyleSheetStyleSheetListSubtleCryptoSyncEventSyncManager
TaskAttributionTimingTextTextDecoderTextEncoderTextMetricsTextTrackTimeEventTimeRangesTouchTouchEventTouchListTrackDefaultTrackDefaultListTransferableTransitionEventTreeWalkerTypeInfo
VRDisplayVRDisplayCapabilitiesVRDisplayEventVREyeParametersVRFieldOfViewVRFieldOfViewReadOnlyVRFrameDataVRLayerInitVRPoseVRStageParametersVTTCueValidityStateVideoPlaybackQualityVisualViewport
WEBGL_color_buffer_floatWEBGL_compressed_texture_astcWEBGL_compressed_texture_atcWEBGL_compressed_texture_etcWEBGL_compressed_texture_etc1WEBGL_compressed_texture_pvrtcWEBGL_compressed_texture_s3tcWEBGL_compressed_texture_s3tc_srgbWEBGL_debug_renderer_infoWEBGL_debug_shadersWEBGL_depth_textureWEBGL_draw_buffersWEBGL_lose_contextWaveShaperNodeWebGL2RenderingContextWebGLActiveInfoWebGLBufferWebGLContextEventWebGLFramebufferWebGLProgramWebGLQueryWebGLRenderbufferWebGLRenderingContextWebGLSamplerWebGLShaderWebGLShaderPrecisionFormatWebGLSyncWebGLTextureWebGLTransformFeedbackWebGLUniformLocationWebGLVertexArrayObjectWebSocketWebSocketsWheelEventWindowWindowBase64WindowClientWindowEventHandlersWindowOrWorkerGlobalScopeWindowTimersWorkerWorkerGlobalScopeWorkerLocationWorkerNavigatorWorkletWritableStreamWritableStreamDefaultControllerWritableStreamDefaultWriter

Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.
