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| 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 btn = document.getElementById("myBtn"); var handler = function (event) { event = EventUtil.getEvent(event); EventUtil.preventDefault(event); EventUtil.stopPropagation(event); };
EventUtil.addHandler(btn, "click", handler); EventUtil.removeHandler(btn, "click", handler);
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