MutationEvent: initMutationEvent() method
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see thecompatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
TheinitMutationEvent() method of theMutationEvent interface initializes thevalue of a mutation event once it's been created (normally using theDocument.createEvent() method).
This method must be called to set the event before it is dispatched, usingEventTarget.dispatchEvent().
Note:In general, you won't create these events yourself; they are created by the browser.
Syntax
initMutationEvent(type, canBubble, cancelable, relatedNode, prevValue, newValue, attrName, attrChange)Parameters
typeA string to set the event's
typeto. Browsers set the following values forMutationEvent:DOMAttrModified,DOMAttributeNameChanged,DOMCharacterDataModified,DOMElementNameChanged,DOMNodeInserted,DOMNodeInsertedIntoDocument,DOMNodeRemoved,DOMNodeRemovedFromDocument,DOMSubtreeModified.canBubbleA boolean indicating whether or not the event can bubble. Sets the value of
Event.bubbles.cancelableA boolean indicating whether or not the event's default action can be prevented. Sets the value of
Event.cancelable.relatedNodeA string representing the new value of the modified node, if any. Sets the value of
MutationEvent.relatedNode.prevValueA string representing the previous value of the modified node, if any. Sets the value of
MutationEvent.prevValue.newValueA string representing the new value of the modified node, if any. Sets the value of
MutationEvent.newValue.attrNameA string representing the name of the
Attrnode changed, if any. Sets the value ofMutationEvent.attrName.attrChangeAn integer representing the reason attribute node changed. Sets the value of
MutationEvent.attrChange.
Return value
None (undefined).