new EventEmitter()
Minimal EventEmitter interface that is molded against the Node.js EventEmitter interface.
- Source:
Methods
emit(event) → {Boolean}
Emit an event to all registered event listeners.
Parameters:
| Name | Type | Description |
|---|---|---|
event |
String | The name of the event. |
- Source:
Returns:
Indication if we've emitted an event.
- Type
- Boolean
listeners(event, exists) → {Array|Boolean}
Return a list of assigned event listeners.
Parameters:
| Name | Type | Description |
|---|---|---|
event |
String | The events that should be listed. |
exists |
Boolean | We only need to know if there are listeners. |
- Source:
Returns:
on(event, fn, contextopt)
Register a new EventListener for the given event.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
event |
String | Name of the event. |
||
fn |
function | Callback function. |
||
context |
Mixed |
<optional> |
this | The context of the function. |
- Source:
once(event, fn, contextopt)
Add an EventListener that's only called once.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
event |
String | Name of the event. |
||
fn |
function | Callback function. |
||
context |
Mixed |
<optional> |
this | The context of the function. |
- Source:
removeAllListeners(event)
Remove all listeners or only the listeners for the specified event.
Parameters:
| Name | Type | Description |
|---|---|---|
event |
String | The event want to remove all listeners for. |
- Source:
removeListener(event, fn, context, once)
Remove event listeners.
Parameters:
| Name | Type | Description |
|---|---|---|
event |
String | The event we want to remove. |
fn |
function | The listener that we need to find. |
context |
Mixed | Only remove listeners matching this context. |
once |
Boolean | Only remove once listeners. |
- Source: