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copied!<p><strong>Add/Remove/Fire Events/Custom Events in Javascript without any frameworks:</strong><br></p> <pre><code>var htmlEvents = {// list of real events //<body> and <frameset> Events onload:1, onunload:1, //Form Events onblur:1, onchange:1, onfocus:1, onreset:1, onselect:1, onsubmit:1, //Image Events onabort:1, //Keyboard Events onkeydown:1, onkeypress:1, onkeyup:1, //Mouse Events onclick:1, ondblclick:1, onmousedown:1, onmousemove:1, onmouseout:1, onmouseover:1, onmouseup:1 } function triggerEvent(el,eventName){ var event; if (typeof window.CustomEvent === 'function') { event = new CustomEvent(eventName); } else if (document.createEvent) { event = document.createEvent('HTMLEvents'); event.initEvent(eventName,true,true); }else if(document.createEventObject){// IE < 9 event = document.createEventObject(); event.eventType = eventName; } event.eventName = eventName; if(el.dispatchEvent){ el.dispatchEvent(event); }else if(el.fireEvent && htmlEvents['on'+eventName]){// IE < 9 el.fireEvent('on'+event.eventType,event);// can trigger only a real event (e.g. 'click') }else if(el[eventName]){ el[eventName](); }else if(el['on'+eventName]){ el['on'+eventName](); } } function addEvent(el,type,handler){ if(el.addEventListener){ el.addEventListener(type,handler,false); }else if(el.attachEvent && htmlEvents['on'+type]){// IE < 9 el.attachEvent('on'+type,handler); }else{ el['on'+type]=handler; } } function removeEvent(el,type,handler){ if(el.removeEventListener){ el.removeEventListener(type,handler,false); }else if(el.detachEvent && htmlEvents['on'+type]){// IE < 9 el.detachEvent('on'+type,handler); }else{ el['on'+type]=null; } } var _body = document.body; var customEventFunction = function(){ console.log('triggered custom event'); } // Subscribe addEvent(_body,'customEvent',customEventFunction); // Trigger triggerEvent(_body,'customEvent'); </code></pre> <p><a href="http://jsfiddle.net/ad4yG/" rel="nofollow noreferrer">Live demo</a></p>

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