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Many methods used with createEvent, such as initCustomEvent, are deprecated. Use event constructors instead.

 

Creates an event of the type specified. The returned object should be first initialized and can then be passed to element.dispatchEvent.

Syntax

var event = document.createEvent(type);
  • event is the created Event object.
  • type is a string that represents the type of event to be created. Possible event types include "UIEvents", "MouseEvents", "MutationEvents", and "HTMLEvents". See Notes section for details.

Example

// Create the event.
var event = document.createEvent('Event');

// Define that the event name is 'build'.
event.initEvent('build', true, true);

// Listen for the event.
elem.addEventListener('build', function (e) {
  // e.target matches elem
}, false);

// target can be any Element or other EventTarget.
elem.dispatchEvent(event);

See also

Notes

Event type strings suitable for passing to createEvent are defined in event modules. Some event modules are defined in DOM Events specifications, some modules are defined in other specification (such as SVG), and some event types are Gecko-specific. See the table below for details.

To-do: add event names to the table too.

Event Module Event type to pass to createEvent Method to be used to initialize the event
DOM Level 2 Events
User Interface event module "UIEvents" event.initUIEvent
Mouse event module "MouseEvents" event.initMouseEvent
Mutation event module "MutationEvents" event.initMutationEvent
HTML event module "HTMLEvents" event.initEvent
DOM Level 3 Events
User Interface event module "UIEvent", "UIEvents" event.initUIEvent
Mouse event module "MouseEvent", "MouseEvents" event.initMouseEvent
Mutation event module "MutationEvent", "MutationEvents" event.initMutationEvent
Mutation name event module (not implemented in Gecko as of June 2006) "MutationNameEvent" event.initMutationNameEvent
Text event module "TextEvent" (Gecko also supports "TextEvents") event.initTextEvent (not implemented)
Keyboard event module "KeyboardEvent" (Gecko also supports "KeyEvents") event.initKeyEvent (Gecko-specific; the DOM 3 Events working draft uses initKeyboardEvent instead)
Custom event module "CustomEvent" event.initCustomEvent
Basic events module "Event" (Gecko also supports "Events") event.initEvent
SVG 1.1 Scripting
SVG "SVGEvents" (Gecko also supports "SVGEvent") event.initEvent
"SVGZoomEvents" (Gecko also supports "SVGZoomEvent") event.initUIEvent
Other event types supported by Gecko
- "MessageEvent" event.initMessageEvent
"MouseScrollEvents", "PopupEvents" event.initMouseEvent
"PopupBlockedEvents" event.initPopupBlockedEvent
"XULCommandEvent", "XULCommandEvents" event.initCommandEvent
Progress Events "ProgressEvent" ProgressEvent.initProgressEvent()Deprecated since Gecko 22.0
Animation Events "AnimationEvent" (or "WebKitAnimationEvent" for WebKit/Blink-based browsers) AnimationEvent.initAnimationEvent()Deprecated since Gecko 23.0
Transition Events "TransitionEvent" (or "WebKitTransitionEvent" for WebKit/Blink-based browsers) TransitionEvent.initTransitionEvent()Deprecated since Gecko 23.0

The reason some events can be created using any of two event type strings is that DOM Level 3 Events changed the event type strings to be singular, while still supporting older plural names for backwards-compatibility.

Specification

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