new once(event, id, listener)
Attach an event listener to the passed event only if the passed
id matches the document id for the event being fired.
Parameters:
| Name | Type | Description |
|---|---|---|
event |
String | The name of the event to listen for. |
id |
* | The document id to match against. |
listener |
function | The method to call when the event is fired. |
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