Created
August 22, 2017 05:15
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var events = (function(){ | |
var topics = {}; | |
var hOP = topics.hasOwnProperty; | |
return { | |
subscribe: function(topic, listener) { | |
// Create the topic's object if not yet created | |
if(!hOP.call(topics, topic)) topics[topic] = []; | |
// Add the listener to queue | |
var index = topics[topic].push(listener) -1; | |
// Provide handle back for removal of topic | |
return { | |
remove: function() { | |
delete topics[topic][index]; | |
} | |
}; | |
}, | |
publish: function(topic, info) { | |
// If the topic doesn't exist, or there's no listeners in queue, just leave | |
if(!hOP.call(topics, topic)) return; | |
// Cycle through topics queue, fire! | |
topics[topic].forEach(function(item) { | |
item(info != undefined ? info : {}); | |
}); | |
} | |
}; | |
})(); |
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