XMLHttpRequest class

(XHR) objects are used to interact with servers. You can retrieve data from a URL without having to do a full page refresh. This enables a Web page to update just part of a page without disrupting what the user is doing. is used heavily in AJAX programming.

EventTarget

XMLHttpRequestEventTarget

XMLHttpRequest

Despite its name, can be used to retrieve any type of data, not just XML. If your communication needs to involve receiving event data or message data from a server, consider using server-sent events through the EventSource interface. For full-duplex communication, WebSockets may be a better choice. Note: This feature is available in Web Workers, except for Service Workers

Implemented types

XMLHttpRequestEventTarget

Available extensions

Annotations

@JS()
@staticInterop

Constructors

XMLHttpRequest(): factory

Properties

hashCode → int: The hash code for this object.
no setterinherited
onabort ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
onerror ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
onload ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
onloadend ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
onloadstart ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
onprogress ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
onreadystatechange ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

getter/setter pair
ontimeout ↔ EventHandlerNonNull<Event>?: Available on XMLHttpRequestEventTarget, provided by the PropsXMLHttpRequestEventTarget extension

getter/setter pair
readyState → int: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
response → dynamic: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
responseText → String: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
responseType ↔ XMLHttpRequestResponseType: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

getter/setter pair
responseURL → String: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
responseXML → Document?: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
status → int: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
statusText → String: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
timeout ↔ int: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

getter/setter pair
upload → XMLHttpRequestUpload: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

no setter
withCredentials ↔ bool: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension

getter/setter pair

Methods

abort() → void: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
addEventListener(String type, EventListener? callback, [dynamic options]) → void: Available on EventTarget, provided by the PropsEventTarget extension
dispatchEvent(Event event) → bool: Available on EventTarget, provided by the PropsEventTarget extension
getAllResponseHeaders() → String: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
getResponseHeader(String name) → String?: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
open(String method, [String? url, bool? async, String? username, String? password]) → void: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
overrideMimeType(String mime) → void: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
removeEventListener(String type, EventListener? callback, [dynamic options]) → void: Available on EventTarget, provided by the PropsEventTarget extension
send([dynamic body]) → void: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
setRequestHeader(String name, String value) → void: Available on XMLHttpRequest, provided by the PropsXMLHttpRequest extension
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

done → int: no setter
headersReceived → int: no setter
loading → int: no setter
opened → int: no setter
unsent → int: no setter