Created
January 11, 2016 16:07
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Cross browser event util
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| // Cross Browser Event Utility | |
| // Nicholas Zakas, Professional JavaScript for Web Developers p.441 | |
| (function(window, document) { | |
| 'use strict'; | |
| var | |
| EventUtil = { | |
| addHandler: function( element, type, handler ) { | |
| if ( element.addEventListener ) { | |
| element.addEventListener ( type, handler, false ); | |
| } else if ( element.attachEvent ) { | |
| element.attachEvent ( "on" + type, handler ); | |
| } else { | |
| element["on" + type] = handler; | |
| } | |
| }, | |
| getEvent: function ( event ) { | |
| return event ? event : window.event; | |
| }, | |
| getTarget: function ( event ) { | |
| return event.target || event.srcElement; | |
| }, | |
| preventDefault: function ( event ) { | |
| if ( event.preventDefault ) { | |
| event.preventDefault(); | |
| } else { | |
| event.returnValue = false; | |
| } | |
| }, | |
| removeHandler: function( element, type, handler ) { | |
| if ( element.removeEventListener ) { | |
| element.removeEventListener ( type, handler, false ); | |
| } else if ( element.detachEvent ) { | |
| element.detachEvent ( "on" + type, handler ); | |
| } else { | |
| element["on" + type] = null; | |
| } | |
| }, | |
| stopPropagation: function ( event ) { | |
| if ( event.stopPropagation ) { | |
| event.stopPropagation(); | |
| } else { | |
| event.cancelBubble = true; | |
| } | |
| } | |
| }; | |
| var newAnchor = document.createElement( "a" ); | |
| newAnchor.href = "#"; | |
| newAnchor.appendChild ( document.createTextNode("Test Link") ); | |
| document.body.appendChild(newAnchor); | |
| newAnchor.onclick = function ( event ) { | |
| var target; | |
| event = EventUtil.getEvent ( event ); | |
| EventUtil.preventDefault ( event ); | |
| EventUtil.stopPropagation ( event ); | |
| target = EventUtil.getTarget ( event ); | |
| if ( "innerText" in target ) { | |
| target.innerText = target.innerHTML + 'X'; | |
| } else { | |
| target.textContent = target.textContent + 'X'; | |
| } | |
| }; | |
| })(window, window.document); |
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