dart:html library   HTML elements and other resources for web-based applications that need to interact with the browser and the DOM (Document Object Model). This library includes DOM element types, CSS styling, local storage, media, speech, events, and more. To get started, check out the Element class, the base class for many of the HTML DOM types. For information on writing web apps with Dart, see https://dart.dev/web. Classes   AbortPaymentEvent   AbsoluteOrientationSensor   AbstractWorker   Accelerometer   AccessibleNode   AccessibleNodeList   AmbientLightSensor   AnchorElement   Animation   AnimationEffectReadOnly   AnimationEffectTiming   AnimationEffectTimingReadOnly   AnimationEvent   AnimationPlaybackEvent   AnimationTimeline   AnimationWorkletGlobalScope   ApplicationCache   ApplicationCache is accessed via Window.applicationCache.   ApplicationCacheErrorEvent   AreaElement   DOM Area Element, which links regions of an image map with a hyperlink.   AudioElement   AuthenticatorAssertionResponse   AuthenticatorAttestationResponse   AuthenticatorResponse   BackgroundFetchClickEvent   BackgroundFetchedEvent   BackgroundFetchEvent   BackgroundFetchFailEvent   BackgroundFetchFetch   BackgroundFetchManager   BackgroundFetchRegistration   BackgroundFetchSettledFetch   BarcodeDetector   BarProp   BaseElement   BatteryManager   BeforeInstallPromptEvent   BeforeUnloadEvent   Blob   BlobEvent   BluetoothRemoteGattDescriptor   Body   BodyElement   BRElement   BroadcastChannel   BudgetState   ButtonElement   ButtonInputElement   A button, with no default behavior.   CacheStorage   CanMakePaymentEvent   CanvasCaptureMediaStreamTrack   CanvasElement   CanvasGradient   An opaque canvas object representing a gradient.   CanvasImageSource   An object that can be drawn to a 2D canvas rendering context.   CanvasPattern   An opaque object representing a pattern of image, canvas, or video.   CanvasRenderingContext   CanvasRenderingContext2D   CDataSection   CharacterData   CheckboxInputElement   A boolean editor control.   ChildNode   Client   Clients   ClipboardEvent   CloseEvent   Comment   CompositionEvent   Console   ContentElement   CookieStore   Coordinates   Credential   CredentialsContainer   CredentialUserData   Crypto   CryptoKey   Css   CssCharsetRule   CssClassSet   A Set that stores the CSS class names for an element.   CssConditionRule   CssFontFaceRule   CssGroupingRule   CssImageValue   CssImportRule   CssKeyframeRule   CssKeyframesRule   CssKeywordValue   CssMatrixComponent   CssMediaRule   CssNamespaceRule   CssNumericValue   CssPageRule   CssPerspective   CssPositionValue   CssRect   A class for representing CSS dimensions.   CssResourceValue   CssRotation   CssRule   CssScale   CssSkew   CssStyleDeclaration   CssStyleDeclarationBase   CssStyleRule   CssStyleSheet   CssStyleValue   CssSupportsRule   CssTransformComponent   CssTransformValue   CssTranslation   CssUnitValue   CssUnparsedValue   CssurlImageValue   CssVariableReferenceValue   CssViewportRule   CustomElementRegistry   CustomEvent   CustomStream<T extends Event>   A stream of custom events, which enables the user to "fire" (add) their own custom events to a stream.   DataElement   DataListElement   DataTransfer   DataTransferItem   DataTransferItemList   DateInputElement   A date (year, month, day) with no time zone.   DedicatedWorkerGlobalScope   DeprecatedStorageInfo   DeprecatedStorageQuota   DeprecationReport   DetailsElement   DetectedBarcode   DetectedFace   DetectedText   DeviceAcceleration   DeviceMotionEvent   DeviceOrientationEvent   DeviceRotationRate   DialogElement   Dimension   Class representing a length measurement in CSS.   DirectoryEntry   DirectoryReader   DivElement   A generic container for content on an HTML page; corresponds to the <div> tag.   DListElement   Document   The base class for all documents.   DocumentFragment   DocumentOrShadowRoot   DocumentTimeline   DomError   DomException   DomImplementation   DomIterator   DomMatrix   DomMatrixReadOnly   DomParser   DomPoint   DomPointReadOnly   DomQuad   DomRectList   DomRectReadOnly   DomStringList   DomStringMap   DomTokenList   Element   An abstract class, which all HTML elements extend.   ElementEvents   ElementList<T extends Element>   An immutable list containing HTML elements. This list contains some additional methods when compared to regular lists for ease of CSS manipulation on a group of elements.   ElementStream<T extends Event>   A specialized Stream available to Elements to enable event delegation.   ElementUpgrader   A utility for changing the Dart wrapper type for elements.   EmailInputElement   An e-mail address or list of e-mail addresses.   EmbedElement   Entry   ErrorEvent   Event   Events   Base class that supports listening for and dispatching browser events.   EventSource   EventStreamProvider<T extends Event>   A factory to expose DOM events as Streams.   EventTarget   Base class for all browser objects that support events.   ExtendableEvent   ExtendableMessageEvent   External   FaceDetector   FederatedCredential   FetchEvent   FieldSetElement   File   FileEntry   FileList   FileReader   FileSystem   FileUploadInputElement   A control for picking files from the user's computer.   FileWriter   FixedSizeListIterator<T>   FocusEvent   FontFace   FontFaceSet   FontFaceSetLoadEvent   FontFaceSource   ForeignFetchEvent   FormData   FormElement   Gamepad   GamepadButton   GamepadEvent   GamepadPose   Geolocation   Geoposition   GlobalEventHandlers   Gyroscope   HashChangeEvent   HeadElement   Headers   HeadingElement   HiddenInputElement   Hidden input which is not intended to be seen or edited by the user.   History   HistoryBase   HRElement   An <hr> tag.   HtmlCollection   HtmlDocument   HtmlElement   HtmlFormControlsCollection   HtmlHtmlElement   HtmlHyperlinkElementUtils   HtmlOptionsCollection   HttpRequest   A client-side XHR request for getting data from a URL, formally known as XMLHttpRequest.   HttpRequestEventTarget   HttpRequestUpload   HttpStatus   HTTP status codes. Exported in dart:io and dart:html.   IdleDeadline   IFrameElement   ImageBitmap   ImageBitmapRenderingContext   ImageButtonInputElement   Either an image which the user can select a coordinate to or a form submit button.   ImageCapture   ImageData   ImageElement   ImmutableListMixin<E>   InputDeviceCapabilities   InputElement   InputElementBase   Exposes the functionality common between all InputElement types.   InstallEvent   IntersectionObserver   IntersectionObserverEntry   InterventionReport   KeyboardEvent   An event that describes user interaction with the keyboard.   KeyboardEventStream   Records KeyboardEvents that occur on a particular element, and provides a stream of outgoing KeyEvents with cross-browser consistent keyCode and charCode values despite the fact that a multitude of browsers that have varying keyboard default behavior.   KeyCode   Defines the keycode values for keys that are returned by KeyboardEvent.keyCode.   KeyEvent   A custom KeyboardEvent that attempts to eliminate cross-browser inconsistencies, and also provide both keyCode and charCode information for all key events (when such information can be determined).   KeyframeEffect   KeyframeEffectReadOnly   KeyLocation   Defines the standard key locations returned by KeyboardEvent.getKeyLocation.   LabelElement   LegendElement   LIElement   LinearAccelerationSensor   LinkElement   LocalDateTimeInputElement   A date and time (year, month, day, hour, minute, second, fraction of a second) with no time zone.   Location   LocationBase   Magnetometer   MapElement   MediaCapabilities   MediaCapabilitiesInfo   MediaDeviceInfo   MediaDevices   MediaElement   MediaEncryptedEvent   MediaError   MediaKeyMessageEvent   MediaKeys   MediaKeySession   MediaKeysPolicy   MediaKeyStatusMap   MediaKeySystemAccess   MediaList   MediaMetadata   MediaQueryList   MediaQueryListEvent   MediaRecorder   MediaSession   MediaSettingsRange   MediaSource   MediaStream   MediaStreamEvent   MediaStreamTrack   MediaStreamTrackEvent   MemoryInfo   MenuElement   An HTML   MessageChannel   MessageEvent   MessagePort   Metadata   MetaElement   MeterElement   MidiAccess   MidiConnectionEvent   MidiInput   MidiInputMap   MidiMessageEvent   MidiOutput   MidiOutputMap   MidiPort   MimeType   MimeTypeArray   ModElement   MonthInputElement   A date consisting of a year and a month with no time zone.   MouseEvent   MutationEvent   MutationObserver   MutationRecord   NavigationPreloadManager   Navigator   NavigatorAutomationInformation   NavigatorConcurrentHardware   NavigatorCookies   NavigatorID   NavigatorLanguage   NavigatorOnLine   NavigatorUserMediaError   NetworkInformation   Node   NodeFilter   NodeIterator   NodeList   NodeTreeSanitizer   Performs sanitization of a node tree after construction to ensure that it does not contain any disallowed elements or attributes.   NodeValidator   Interface used to validate that only accepted elements and attributes are allowed while parsing HTML strings into DOM nodes.   NodeValidatorBuilder   Class which helps construct standard node validation policies.   NoncedElement   NonDocumentTypeChildNode   NonElementParentNode   Notification   NotificationEvent   NumberInputElement   A numeric editor control.   ObjectElement   OffscreenCanvas   OffscreenCanvasRenderingContext2D   OListElement   OptGroupElement   OptionElement   OrientationSensor   OutputElement   OverconstrainedError   PageTransitionEvent   PaintRenderingContext2D   PaintSize   PaintWorkletGlobalScope   ParagraphElement   ParamElement   ParentNode   PasswordCredential   PasswordInputElement   Text with no line breaks (sensitive information).   Path2D   PaymentAddress   PaymentInstruments   PaymentManager   PaymentRequest   PaymentRequestEvent   PaymentRequestUpdateEvent   PaymentResponse   Performance   PerformanceEntry   PerformanceLongTaskTiming   PerformanceMark   PerformanceMeasure   PerformanceNavigation   PerformanceNavigationTiming   PerformanceObserver   PerformanceObserverEntryList   PerformancePaintTiming   PerformanceResourceTiming   PerformanceServerTiming   PerformanceTiming   Permissions   PermissionStatus   PhotoCapabilities   PictureElement   Platform   Plugin   PluginArray   Point<T extends num>   A utility class for representing two-dimensional positions.   PointerEvent   PopStateEvent   PositionError   PreElement   Presentation   PresentationAvailability   PresentationConnection   PresentationConnectionAvailableEvent   PresentationConnectionCloseEvent   PresentationConnectionList   PresentationReceiver   PresentationRequest   ProcessingInstruction   ProgressElement   ProgressEvent   PromiseRejectionEvent   PublicKeyCredential   PushEvent   PushManager   PushMessageData   PushSubscription   PushSubscriptionOptions   QuoteElement   RadioButtonInputElement   A control that when used with other RadioButtonInputElement controls forms a radio button group in which only one control can be checked at a time.   Range   RangeInputElement   Similar to NumberInputElement but the browser may provide more optimal styling (such as a slider control).   RangeInputElementBase   Base interface for all input element types which involve ranges.   ReadyState   Contains the set of standard values returned by HTMLDocument.getReadyState.   Rectangle<T extends num>   A class for representing two-dimensional rectangles whose properties are immutable.   RelatedApplication   RelativeOrientationSensor   RemotePlayback   ReportBody   ReportingObserver   ResetButtonInputElement   A button, which when clicked, resets the form.   ResizeObserver   ResizeObserverEntry   RtcCertificate   RtcDataChannel   RtcDataChannelEvent   RtcDtmfSender   RtcDtmfToneChangeEvent   RtcIceCandidate   RtcLegacyStatsReport   RtcPeerConnection   RtcPeerConnectionIceEvent   RtcRtpContributingSource   RtcRtpReceiver   RtcRtpSender   RtcSessionDescription   RtcStatsReport   RtcStatsResponse   RtcTrackEvent   Screen   ScreenOrientation   ScriptElement   ScrollAlignment   Options for Element.scrollIntoView.   ScrollState   ScrollTimeline   SearchInputElement   Similar to TextInputElement, but on platforms where search is styled differently this will get the search style.   SecurityPolicyViolationEvent   SelectElement   Selection   Sensor   SensorErrorEvent   ServiceWorker   ServiceWorkerContainer   ServiceWorkerGlobalScope   ServiceWorkerRegistration   ShadowElement   ShadowRoot   SharedArrayBuffer   SharedWorker   SharedWorkerGlobalScope   SlotElement   SourceBuffer   SourceBufferList   SourceElement   SpanElement   SpeechGrammar   SpeechGrammarList   SpeechRecognition   SpeechRecognitionAlternative   SpeechRecognitionError   SpeechRecognitionEvent   SpeechRecognitionResult   SpeechSynthesis   SpeechSynthesisEvent   SpeechSynthesisUtterance   SpeechSynthesisVoice   StaticRange   Storage   The type used by the Window.localStorage and Window.sessionStorage properties. Storage is implemented as a Map<String, String>.   StorageEvent   StorageManager   StyleElement   StyleMedia   StylePropertyMap   StylePropertyMapReadonly   StyleSheet   SubmitButtonInputElement   A button, which when clicked, submits the form.   SyncEvent   SyncManager   TableCaptionElement   TableCellElement   TableColElement   TableElement   TableRowElement   TableSectionElement   TaskAttributionTiming   TelephoneInputElement   Represents a control for editing a telephone number.   TemplateElement   Text   TextAreaElement   TextDetector   TextEvent   TextInputElement   A basic text input editor control.   TextInputElementBase   Base interface for all inputs which involve text editing.   TextMetrics   TextTrack   TextTrackCue   TextTrackCueList   TextTrackList   TimeElement   TimeInputElement   A time (hour, minute, seconds, fractional seconds) with no time zone.   TimeRanges   TitleElement   Touch   TouchEvent   TouchList   TrackDefault   TrackDefaultList   TrackElement   TrackEvent   TransitionEvent   TreeWalker   TrustedHtml   TrustedScriptUrl   TrustedUrl   UIEvent   UListElement   UnderlyingSourceBase   UnknownElement   UriPolicy   Defines the policy for what types of uris are allowed for particular attribute values.   Url   UrlInputElement   A control for editing an absolute URL.   UrlSearchParams   UrlUtilsReadOnly   ValidityState   VideoElement   VideoPlaybackQuality   VideoTrack   VideoTrackList   VisualViewport   VR   VRCoordinateSystem   VRDevice   VRDeviceEvent   VRDisplay   VRDisplayCapabilities   VRDisplayEvent   VREyeParameters   VRFrameData   VRFrameOfReference   VRPose   VRSession   VRSessionEvent   VRStageBounds   VRStageBoundsPoint   VRStageParameters   VttCue   VttRegion   WebSocket   Use the WebSocket interface to connect to a WebSocket, and to send and receive data on that WebSocket.   WeekInputElement   A date consisting of a week-year number and a week number with no time zone.   WheelEvent   Window   Top-level container for the current browser tab or window.   WindowBase   Top-level container for a browser tab or window.   WindowBase64   WindowClient   WindowEventHandlers   Worker   WorkerGlobalScope   WorkerPerformance   WorkletAnimation   WorkletGlobalScope   XmlDocument   XmlSerializer   XPathEvaluator   XPathExpression   XPathNSResolver   XPathResult   XsltProcessor   Properties   document → HtmlDocument read-only
  Root node for all content in a web page.    window → Window read-only
  Top-level container for a web page, which is usually a browser tab or window.    Functions   promiseToFuture<T>(Object jsPromise) → Future<T>    Converts a JavaScript Promise to a Dart Future.   promiseToFutureAsMap(dynamic jsPromise) → Future<Map<String, dynamic>?>    Convert a JS Promise to a Future<Map<String, dynamic>>.   querySelector(String selectors) → Element?    Finds the first descendant element of this document that matches the specified group of selectors.   querySelectorAll<T extends Element>(String selectors) → ElementList<T>    Finds all descendant elements of this document that match the specified group of selectors.   Typedefs   BlobCallback = void Function(Blob? blob)    CustomElementConstructor = void Function()    DecodeErrorCallback = void Function(DomException error)    DecodeSuccessCallback = void Function(AudioBuffer decodedData)    EventListener = dynamic Function(Event event)    FontFaceSetForEachCallback = void Function(FontFace fontFace, FontFace fontFaceAgain, FontFaceSet set)    Emitted for any setlike IDL entry needs a callback signature. Today there is only one.   FrameRequestCallback = void Function(num highResTime)    FunctionStringCallback = void Function(String data)    IdleRequestCallback = void Function(IdleDeadline deadline)    IntersectionObserverCallback = void Function(List entries, IntersectionObserver observer)    MediaSessionActionHandler = void Function()    MessageCallback = void Function(Map message)    MetadataCallback = void Function(Metadata metadata)    MojoWatchCallback = void Function(int result)    MutationCallback = void Function(List mutations, MutationObserver observer)    PerformanceObserverCallback = void Function(PerformanceObserverEntryList entries, PerformanceObserver observer)    RemotePlaybackAvailabilityCallback = void Function(bool available)    ReportingObserverCallback = void Function(List reports, ReportingObserver observer)    RequestAnimationFrameCallback = void Function(num highResTime)    ResizeObserverCallback = void Function(List entries, ResizeObserver observer)    RtcPeerConnectionErrorCallback = void Function(DomException exception)    RtcStatsCallback = void Function(RtcStatsResponse response)    ScrollStateCallback = void Function(ScrollState scrollState)    StorageErrorCallback = void Function(DomError error)    StorageQuotaCallback = void Function(int grantedQuotaInBytes)    StorageUsageCallback = void Function(int currentUsageInBytes, int currentQuotaInBytes)    TimeoutHandler = void Function()    VoidCallback = void Function()   

    
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