yjryu / senior_care_system star
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221204 류윤주 최초 커밋
2022-12-04
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jlchoi1932 2023-02-09 4ea5dec 230209 최정임 노드 모듈 UNIX
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Emitter Build Status#

Event emitter component.

Installation#

$ component install component/emitter

API#

Emitter(obj)#

The Emitter may also be used as a mixin. For example
a "plain" object may become an emitter, or you may
extend an existing prototype.

As an Emitter instance:

var Emitter = require('emitter');
var emitter = new Emitter;
emitter.emit('something');

As a mixin:

var Emitter = require('emitter');
var user = { name: 'tobi' };
Emitter(user);

user.emit('im a user');

As a prototype mixin:

var Emitter = require('emitter');
Emitter(User.prototype);

Emitter#on(event, fn)#

Register an event handler fn.

Emitter#once(event, fn)#

Register a single-shot event handler fn,
removed immediately after it is invoked the
first time.

Emitter#off(event, fn)#

  • Pass event and fn to remove a listener.
  • Pass event to remove all listeners on that event.
  • Pass nothing to remove all listeners on all events.

Emitter#emit(event, ...)#

Emit an event with variable option args.

Emitter#listeners(event)#

Return an array of callbacks, or an empty array.

Emitter#hasListeners(event)#

Check if this emitter has event handlers.

License#

MIT