-
-
Save christiannwamba/6c74bf43f5f2e80d6c3162ae45342f7d to your computer and use it in GitHub Desktop.
Addy's Observer Pattern example JS Bin// source http://jsbin.com/gupusu
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
console.clear(); | |
/*! | |
* Pub/Sub implementation | |
* http://addyosmani.com/ | |
* Licensed under the GPL | |
*/ | |
var pubsubz = {}; | |
(function (q) { | |
var topics = {}, | |
subUid = -1; | |
q.publish = function (topic, args) { | |
if (!topics[topic]) { | |
return false; | |
} | |
setTimeout(function () { | |
var subscribers = topics[topic], | |
len = subscribers ? subscribers.length : 0; | |
while (len--) { | |
subscribers[len].func(topic, args); | |
} | |
}, 0); | |
return true; | |
}; | |
q.subscribe = function (topic, func) { | |
if (!topics[topic]) { | |
topics[topic] = []; | |
} | |
var token = (++subUid).toString(); | |
topics[topic].push({ | |
token: token, | |
func: func | |
}); | |
return token; | |
}; | |
q.unsubscribe = function (token) { | |
for (var m in topics) { | |
if (topics[m]) { | |
for (var i = 0, j = topics[m].length; i < j; i++) { | |
if (topics[m][i].token === token) { | |
topics[m].splice(i, 1); | |
return token; | |
} | |
} | |
} | |
} | |
return false; | |
}; | |
}(pubsubz)); | |
var testSubscriber = function( topics , data ){ | |
console.log( topics + ": " + data ); | |
}; | |
var testSubscription = pubsubz.subscribe( 'example1', testSubscriber ); | |
pubsubz.publish( 'example1', 'hello world!' ); | |
pubsubz.publish( 'example1', ['test','a','b','c'] ); | |
pubsubz.publish( 'example1', [{'color':'blue'},{'text':'hello'}] ); | |
setTimeout(function(){ | |
pubsubz.unsubscribe( testSubscription ); | |
}, 0); | |
pubsubz.publish( 'example1', 'hello again!' ); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment