Created
March 2, 2017 15:09
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Custom Event Handler
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class Event { | |
constructor() { | |
this.events = {}; | |
} | |
fire(event, data) { | |
const Event = this.events[event]; | |
if( Event ) { | |
Event.forEach(callback => { | |
callback.call(null, data); | |
}); | |
} | |
} | |
listen(event, callback) { | |
if(!this.events[event]) { | |
this.events[event] = []; | |
} | |
this.events[event].push(callback); | |
return () => { | |
this.events[event] = this.events[event].filter(eventCallback => callback !== eventCallback); | |
} | |
} | |
list() { | |
return console.dir(this.events); | |
} | |
} | |
let E = new Event(); | |
E.listen('event:test-event', data => { | |
console.log(data); | |
}); | |
E.fire('event:test-event', {name: 'test'}); | |
E.list(); |
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