on
function
on()
| Option name | Type | Description |
|---|---|---|
| eventName | String | Name of event, one of listed above |
| handler | Function | callback for event |
add a listener to an event
Supported events:
add→ (object, options)update→ (object, options)remove→ (object, options)change→ (eventName, object, options)
function on (state, eventName, handler) {
state.emitter.on(eventName, handler)
return this
}