Ahá...very interesting!! Thanks a lot!!
2014-02-06 10:42 GMT+01:00 zladuric <[email protected]>: > The keyword here is 'on' method. *source.on* vs *sink.on*. On is > eventemitter method that listens to events emited on THAT object. > > So if you emit stuff from source, attaching a listener to sink does not > help. It doesn't matter what kind of object your sink is - it did not emit > any radiation. > > To make one object emit events and have others listen, you have two simple > routes. One is to get attached to *source* from all your listeners, or > the other is to use some kind of a bus or pubsub. > > For the first version, your source would be an EventEmitter and it would > emit('radiation'). And your sink can be any other object (including an > event emiter), which has a listener. > > Something like this: > var Sink = new (require("events").EventEmitter)() /* or whatever else */ > Sink.radiationHandler = function(){ > console.log('run to the hills!'); > } > var sink = new Sink; > > Then you attach that method as a listener to it, like this: > > source.on('radiation', sink.radiationHandler); > > The other method I've described is a pubsub, kind of like this: > > https://gist.github.com/fatihacet/1290216 > > > On Thursday, February 6, 2014 12:45:47 AM UTC+1, q2dg2b wrote: >> >> Hello friends >> >> I don't know why this code doesn't work: >> >> var source = new (require("events").EventEmitter)() >> var sink = new (require("events").EventEmitter)() >> setInterval(function() {source.emit("radiation")}, 1000) >> sink.on("radiation", function(){console.log("¡Detected!")}) >> >> However, this code does work: >> >> var source = new (require("events").EventEmitter)() >> setInterval(function() {source.emit("radiation")}, 1000) >> source.on("radiation", function(){console.log("¡Detected!")}) >> >> Isn't possible to emit an event by an object and to receive this event by >> another object, then? >> >> Thanks!! >> > -- > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > > --- > You received this message because you are subscribed to a topic in the > Google Groups "nodejs" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/nodejs/lMpuhZmcysY/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
