Created
December 7, 2019 10:40
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Super-basic Javascript (publish subscribe) pattern
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| var events = { | |
| events: {}, | |
| on: function (eventName, fn) { | |
| this.events[eventName] = this.events[eventName] || []; | |
| this.events[eventName].push(fn); | |
| }, | |
| off: function(eventName, fn) { | |
| if (this.events[eventName]) { | |
| for (var i = 0; i < this.events[eventName].length; i++) { | |
| if (this.events[eventName][i] === fn) { | |
| this.events[eventName].splice(i, 1); | |
| break; | |
| } | |
| }; | |
| } | |
| }, | |
| emit: function (eventName, data) { | |
| if (this.events[eventName]) { | |
| this.events[eventName].forEach(function(fn) { | |
| fn(data); | |
| }); | |
| } | |
| } | |
| }; |
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