emitter.on(eventName, listener)
Adds the listener
function to the end of the listeners array for the event named eventName
. No checks are made to see if the listener
has already been added. Multiple calls passing the same combination of eventName
and listener
will result in the listener
being added, and called, multiple times.
server.on('connection', (stream) => { console.log('someone connected!'); });
Returns a reference to the EventEmitter
so calls can be chained.
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