vikingmute/jsbin.yibufuco.html

## jsbin.yibufuco.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>

</body>
</html>

## jsbin.yibufuco.js
function Emitter() {
  this._events = {};
};
function toArray(obj) {
  if (typeof obj === 'object'){
    return Array.prototype.slice.call(obj);
  } else {
    return [];
  }

}
function alias(name) {
  return function aliasClosure() {
    return this[name].apply(this, arguments);
  };
}
function indexOfListeners(haystack, needle) {
  for (var i = 0, len = haystack.length; i < len; i++) {
    if (haystack[i] == needle) {
      return i;
    }
  }
  return -1;
}
var fn = Emitter.prototype;

fn._getEvents = function () {
  return this._events;
};

fn.getListeners = function (event) {
  var events = this._getEvents();
  var response;
  response = events[event] || [];
  return response;
};
fn.addListener = function (event, listener) {
  var events = this._getEvents();
  var eventsArray = this.getListeners(event);
  if (eventsArray.length == 0) {
    //create a new event
    events[event] = [listener];
  } else {
    events[event].push(listener);
  }
};
fn.on = alias('addListener');
fn.removeListener = function (event, listener) {
  var eventsArray = this.getListeners(event);
  var index = indexOfListeners(eventsArray, listener);
  if (index !== -1) {
    eventsArray.splice(index, 1);
  }
};
fn.off = alias('removeListener');
fn.emit = function () {
  var args = toArray(arguments);
  var event = args.splice(0 ,1);
  var cargs = args.slice();
  var eventArray = this.getListeners(event);
  for (var i = 0, len = eventArray.length; i < len; i++) {
    var callback = eventArray[i];
    if (cargs.length === 0) {
      callback.apply(this);
    } else {
      callback.apply(this, cargs[i]);
    }

  }

};

var grid = new Emitter();
var callback = function () {
  console.log('cool kid');
}


grid.addListener('logout', callback);

grid.addListener('logout', function() {
  console.log('bitch out');
});
grid.off('logout', callback);
grid.emit('logout');
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>JS Bin</title>
	</head>
	<body>

	</body>
	</html>
	function Emitter() {
	this._events = {};
	};
	function toArray(obj) {
	if (typeof obj === 'object'){
	return Array.prototype.slice.call(obj);
	} else {
	return [];
	}

	}
	function alias(name) {
	return function aliasClosure() {
	return this[name].apply(this, arguments);
	};
	}
	function indexOfListeners(haystack, needle) {
	for (var i = 0, len = haystack.length; i < len; i++) {
	if (haystack[i] == needle) {
	return i;
	}
	}
	return -1;
	}
	var fn = Emitter.prototype;

	fn._getEvents = function () {
	return this._events;
	};

	fn.getListeners = function (event) {
	var events = this._getEvents();
	var response;
	response = events[event] \|\| [];
	return response;
	};
	fn.addListener = function (event, listener) {
	var events = this._getEvents();
	var eventsArray = this.getListeners(event);
	if (eventsArray.length == 0) {
	//create a new event
	events[event] = [listener];
	} else {
	events[event].push(listener);
	}
	};
	fn.on = alias('addListener');
	fn.removeListener = function (event, listener) {
	var eventsArray = this.getListeners(event);
	var index = indexOfListeners(eventsArray, listener);
	if (index !== -1) {
	eventsArray.splice(index, 1);
	}
	};
	fn.off = alias('removeListener');
	fn.emit = function () {
	var args = toArray(arguments);
	var event = args.splice(0 ,1);
	var cargs = args.slice();
	var eventArray = this.getListeners(event);
	for (var i = 0, len = eventArray.length; i < len; i++) {
	var callback = eventArray[i];
	if (cargs.length === 0) {
	callback.apply(this);
	} else {
	callback.apply(this, cargs[i]);
	}

	}

	};

	var grid = new Emitter();
	var callback = function () {
	console.log('cool kid');
	}


	grid.addListener('logout', callback);

	grid.addListener('logout', function() {
	console.log('bitch out');
	});
	grid.off('logout', callback);
	grid.emit('logout');