Small and powerful eventing in node and browser
var eventify = require('ngraph.events');
var yourObject = {}; // any javascript object
eventify(yourObject);
// now any object can listen to events from your object
yourObject.on('beep', function(name) { console.log('Hello ' + name); });
// and you can fire events from your object:
yourObject.fire('beep', 'World!'); // prints 'Hello World!'
// stop listen to events:
yourObject.off('beep');
More advanced examples:
var eventify = require('ngraph.events');
var yourObject = eventify({});
// Pass context to event handler as last argument:
yourObject.on('beep', function () { console.log(this === yourObject); }, yourObject);
yourObject.fire('beep'); // prints true;
// Pass additional arguments to fire:
var onBop = function (x, y) { console.log(x + y); };
yourObject.on('bop', onBop);
yourObject.fire('bop', 40, 2); // prints 42;
// Remove given event handler for 'bop' event
yourObject.off('bop', onBop);
// Remove all event listeners from your object:
yourObject.off();
I wanted a light-weight eventing library, so I built this.
With npm do:
npm install ngraph.events
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