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  • EventUtil

    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;
            }
        },
        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;
            }
        },
    
        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;
            }
        },
        stopPropagation: function (event) {
            if (event.stopPropagation) {
                event.stopPropagation();
            } else {
                event.cancelBubbles = true;
            }
        },
        getRelatedTarget: function (event) {
            if (event.relatedTarger) {
                return event.relatedTarget;
            } else if (event.toElement) {
                return event.toElement;
            } else if (event.fromElement) {
                return event.fromElement;
            } else { return null; }
    
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/futao/p/2647458.html
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