@serenity-is/corelib / Fluent / on

Function: on()

Adds an event listener (implementation).

Param

Target element to listen on.

Param

Event type; may include a .namespace suffix.

Param

Event listener or selector when delegating.

Param

Delegated handler when handler is a selector.

Call Signature

on<K>(element, type, listener): void

Defined in: src/base/fluent.ts:536

Adds an event listener, with optional delegation and namespace support.

Type Parameters

K

K extends keyof HTMLElementEventMap

Parameters

element

EventTarget

Target element to listen on.

type

K

Event type; may include a .namespace suffix (e.g. "click.myNs").

listener

(this, ev) => any

Callback to invoke when the event fires.

Returns

void

void.

Call Signature

on(element, type, listener): void

Defined in: src/base/fluent.ts:544

Adds an event listener.

Parameters

element

EventTarget

Target element to listen on.

type

string

Event type; may include a .namespace suffix.

listener

EventListener

Callback to invoke when the event fires.

Returns

void

void.

Call Signature

on(element, type, selector, delegationHandler): void

Defined in: src/base/fluent.ts:553

Adds a delegated event listener.

Parameters

element

EventTarget

Target element to listen on.

type

string

Event type; may include a .namespace suffix.

selector

string

CSS selector to delegate to.

delegationHandler

Function

Handler invoked when the delegated target matches.

Returns

void

void.