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📁 ..	-	2026-02-12 14:54
📄 .bower.json { "name": "ev-emitter", "main": "ev-emitter.js", "homepage": "https://github.com/metafizzy/ev-emitter", "authors": [ "David DeSandro <desandrocodes@gmail.com>" ], "description": "lil' event emitter", "moduleType": [ "amd", "globals", "node" ], "keywords": [ "event", "emitter", "pubsub" ], "license": "MIT", "ignore": [ "*/.", "node_modules", "bower_components", "test", "tests", "sandbox" ], "version": "1.0.2", "_release": "1.0.2", "_resolution": { "type": "version", "tag": "v1.0.2", "commit": "0f5ad20bda45710afe9744ed779395e25a530a87" }, "_source": "https://github.com/metafizzy/ev-emitter.git", "_target": "~1.0.0", "_originalSource": "ev-emitter" }	761 B	2026-02-12 14:54
📄 README.md # EvEmitter _Lil' event emitter_ — add a little pub/sub EvEmitter adds publish/subscribe pattern to a browser class. It's a smaller version of [Olical/EventEmitter](https://github.com/Olical/EventEmitter). That EventEmitter is full featured, widely used, and great. This EvEmitter has just the base event functionality to power the event API in libraries like [Isotope](http://isotope.metafizzy.co), [Flickity](http://flickity.metafizzy.co), [Masonry](http://masonry.desandro.com), and [imagesLoaded](http://imagesloaded.desandro.com). ## API ``` js // Inherit prototype, IE8+ MyClass.prototype = new EvEmitter(); // Inherit prototype, IE9+ MyClass.prototype = Object.create( EvEmitter.prototype ); // Mixin prototype _.extend( MyClass.prototype, EvEmitter.prototype ); // single instance var emitter = new EventEmitter(); ``` ### on Add an event listener. ``` js emitter.on( eventName, listener ) ``` + `eventName` - _String_ - name of the event + `listener` - _Function_ ### off Remove an event listener. ``` js emitter.off( eventName, listener ) ``` ### once Add an event listener to be triggered only once. ``` js emitter.once( eventName, listener ) ``` ### emitEvent Trigger an event. ``` js emitter.emitEvent( eventName, args ) ``` + `eventName` - _String_ - name of the event + `args` - _Array_ - arguments passed to listeners ## Code example ``` js // create event emitter var emitter = new EventEmitter(); // listeners function hey( a, b, c ) { console.log( 'Hey', a, b, c ) } function ho( a, b, c ) { console.log( 'Ho', a, b, c ) } function letsGo( a, b, c ) { console.log( 'Lets go', a, b, c ) } // bind listeners emitter.on( 'rock', hey ) emitter.once( 'rock', ho ) // trigger letsGo once emitter.on( 'rock', letsGo ) // emit event emitter.emitEvent( 'rock', [ 1, 2, 3 ] ) // => 'Hey', 1, 2, 3 // => 'Ho', 1, 2, 3 // => 'Lets go', 1, 2, 3 // unbind emitter.off( 'rock', ho ) emitter.emitEvent( 'rock', [ 4, 5, 6 ] ) // => 'Hey' 4, 5, 6 ``` ## License EvEmitter is released under the [MIT License](http://desandro.mit-license.org/). Have at it.	2.05 KB	2026-02-12 14:54
📄 bower.json { "name": "ev-emitter", "main": "ev-emitter.js", "homepage": "https://github.com/metafizzy/ev-emitter", "authors": [ "David DeSandro <desandrocodes@gmail.com>" ], "description": "lil' event emitter", "moduleType": [ "amd", "globals", "node" ], "keywords": [ "event", "emitter", "pubsub" ], "license": "MIT", "ignore": [ "*/.", "node_modules", "bower_components", "test", "tests", "sandbox" ] }	474 B	2026-02-12 14:54
📄 ev-emitter.js /** * EvEmitter v1.0.2 * Lil' event emitter * MIT License / / jshint unused: true, undef: true, strict: true / ( function( global, factory ) { // universal module definition / jshint strict: false / / globals define, module */ if ( typeof define == 'function' && define.amd ) { // AMD - RequireJS define( factory ); } else if ( typeof module == 'object' && module.exports ) { // CommonJS - Browserify, Webpack module.exports = factory(); } else { // Browser globals global.EvEmitter = factory(); } }( this, function() { "use strict"; function EvEmitter() {} var proto = EvEmitter.prototype; proto.on = function( eventName, listener ) { if ( !eventName \|\| !listener ) { return; } // set events hash var events = this._events = this._events \|\| {}; // set listeners array var listeners = events[ eventName ] = events[ eventName ] \|\| []; // only add once if ( listeners.indexOf( listener ) == -1 ) { listeners.push( listener ); } return this; }; proto.once = function( eventName, listener ) { if ( !eventName \|\| !listener ) { return; } // add event this.on( eventName, listener ); // set once flag // set onceEvents hash var onceEvents = this._onceEvents = this._onceEvents \|\| {}; // set onceListeners object var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] \|\| {}; // set flag onceListeners[ listener ] = true; return this; }; proto.off = function( eventName, listener ) { var listeners = this._events && this._events[ eventName ]; if ( !listeners \|\| !listeners.length ) { return; } var index = listeners.indexOf( listener ); if ( index != -1 ) { listeners.splice( index, 1 ); } return this; }; proto.emitEvent = function( eventName, args ) { var listeners = this._events && this._events[ eventName ]; if ( !listeners \|\| !listeners.length ) { return; } var i = 0; var listener = listeners[i]; args = args \|\| []; // once stuff var onceListeners = this._onceEvents && this._onceEvents[ eventName ]; while ( listener ) { var isOnce = onceListeners && onceListeners[ listener ]; if ( isOnce ) { // remove listener // remove before trigger to prevent recursion this.off( eventName, listener ); // unset once flag delete onceListeners[ listener ]; } // trigger listener listener.apply( this, args ); // get next listener i += isOnce ? 0 : 1; listener = listeners[i]; } return this; }; return EvEmitter; }));	2.49 KB	2026-02-12 14:54
📄 package.json { "name": "ev-emitter", "version": "1.0.2", "description": "lil' event emitter", "main": "ev-emitter.js", "scripts": { "test": "mocha test/test" }, "repository": { "type": "git", "url": "git+https://github.com/metafizzy/ev-emitter.git" }, "keywords": [ "event", "emitter", "pubsub" ], "author": "David DeSandro", "license": "MIT", "bugs": { "url": "https://github.com/metafizzy/ev-emitter/issues" }, "homepage": "https://github.com/metafizzy/ev-emitter#readme", "directories": { "test": "test" } }	564 B	2026-02-12 14:54

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