MarquisF · January 11, 2016 16:07 · Nov 25, 2012
diff --git a/EventUtil.js b/EventUtil.js
@@ -0,0 +1,75 @@
+// 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);