ShadowRoot
Values
addEventListener
Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.
The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.
When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.
When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.
When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.
If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.
The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture. Read more on MDN
Parameters
WebAPI.DOMAPI.shadowRoot WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListener option< WebAPI.EventAPI.addEventListenerOptions >Return type
unitaddEventListener_useCapture
Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.
The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.
When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.
When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.
When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.
If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.
The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture. Read more on MDN
Parameters
WebAPI.DOMAPI.shadowRoot WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListenerReturn type
unitappend
Inserts nodes after the last child of node, while replacing strings in nodes with equivalent Text nodes.
Throws a "HierarchyRequestError" DOMException if the constraints of the node tree are violated. Read more on MDN
append2
Inserts nodes after the last child of node, while replacing strings in nodes with equivalent Text nodes.
Throws a "HierarchyRequestError" DOMException if the constraints of the node tree are violated. Read more on MDN
appendChild
asDocumentFragment
asEventTarget
asNode
cloneNode
Returns a copy of node. If deep is true, the copy also includes the node's descendants. Read more on MDN
compareDocumentPosition
Returns a bitmask indicating the position of other relative to node. Read more on MDN
contains
Returns true if other is an inclusive descendant of node, and false otherwise. Read more on MDN
dispatchEvent
Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise. Read more on MDN
getAnimations
getElementById
Returns the first element within node's descendants whose ID is elementId. Read more on MDN
getHTML
getRootNode
Returns node's root. Read more on MDN
Parameters
WebAPI.DOMAPI.shadowRoot option< WebAPI.DOMAPI.getRootNodeOptions >Return type
WebAPI.DOMAPI.nodehasChildNodes
Returns whether node has children. Read more on MDN
isEqualNode
Returns whether node and otherNode have the same properties. Read more on MDN
normalize
Removes empty exclusive Text nodes and concatenates the data of remaining contiguous exclusive Text nodes into the first of their nodes. Read more on MDN
prepend
Inserts nodes before the first child of node, while replacing strings in nodes with equivalent Text nodes.
Throws a "HierarchyRequestError" DOMException if the constraints of the node tree are violated. Read more on MDN
prepend2
Inserts nodes before the first child of node, while replacing strings in nodes with equivalent Text nodes.
Throws a "HierarchyRequestError" DOMException if the constraints of the node tree are violated. Read more on MDN
querySelector
Returns the first element that is a descendant of node that matches selectors. Read more on MDN
querySelectorAll
Returns all element descendants of node that match selectors. Read more on MDN
removeChild
removeEventListener
Removes the event listener in target's event listener list with the same type, callback, and options. Read more on MDN
Parameters
WebAPI.DOMAPI.shadowRoot WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListener option< WebAPI.EventAPI.eventListenerOptions >Return type
unitremoveEventListener_useCapture
Removes the event listener in target's event listener list with the same type, callback, and options. Read more on MDN
Parameters
WebAPI.DOMAPI.shadowRoot WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListenerReturn type
unitreplaceChildren
Replace all children of node with nodes, while replacing strings in nodes with equivalent Text nodes.
Throws a "HierarchyRequestError" DOMException if the constraints of the node tree are violated. Read more on MDN
replaceChildren2
Replace all children of node with nodes, while replacing strings in nodes with equivalent Text nodes.
Throws a "HierarchyRequestError" DOMException if the constraints of the node tree are violated. Read more on MDN